Answers created by Nghi N

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Solve cos x - sin x tan x + 1 = 0 for 0°≤x≤360° ? need the solution asap, thank you.
How do I simplify the following trigonometric identity? Tan(x)/cot(x)
How do you solve $tan x sin x - tan x = 0$ $tanxsinx-tanx=0$ in the interval [0,360]?
How to prove ${sin}^{6} x + {cos}^{6} x = 1 - 3 {sin}^{2} x {cos}^{2} x$ $sin^6x+cos^6x=1-3sin^2xcos^2x$ ?
How do I simplify the following trigonometric identity? Csc(x) cot (x)/sec(x)
How do you simplify ${cos}^{4} x - {sin}^{4} x$ $cos^4x-sin^4x$ ?
The terminal side of $θ$ $theta$ in standard position contains (-8,-15), how do you find the exact values of the six trigonometric functions of $θ$ $theta$ ?
Find x where pi <= x <= 2pi? 4 cos^2 x - 2= sec^2 x - tan^2 x
Find all angles a in the interval [0degrees, 360 degrees] such that sin^2a-sina =0?
What is the value of cos sign if the reference angle is 13 pi/3?
How do you solve: tanθ + secθ = 1 ?
The maximum value of the function f(x)=(3cosx-2)^2-2 ?
How do you prove that cos^4x-sin^4x=cos(2x) ?
What is the formula of (1-cosx)/sinx ?
How do you evaluate ${tan}^{- 1} (- \sqrt{3})$ $tan^-1 (-sqrt3)$ without a calculator?
If $sin x = \frac{4}{5}$ $\sin x = \frac { 4} { 5]$ , what is $sin 2 x$ $sin 2x$ ?
How do you solve $2 {sin}^{2} x - 5 sin x - 3 = 0$ $2sin^2x-5sinx-3 = 0$ ?
Solve $tan 2 A = cot (A - 18)$ $tan2A=cot(A-18)$ $0 < θ < 90$ $0<theta<90$ ?
If cos A = -4/5 how do you find tan 2A?
How do you find the value for ${csc}^{- 1} (- \frac{7}{3})$ $csc^-1 (-7/3)$ ?
Solve sec x = 1.788, 0°<x<720° ?
Write 3cosx-4sinx in the form k(sinx-β)?
How do you solve $18 cos x - 9 \sqrt{3} = 0$ $18cosx-9sqrt3=0$ ?
How do you find the point (x,y) on the unit circle that corresponds to the real number $t = \frac{5 π}{4}$ $t=(5pi)/4$ ?
Find the value ? ${sin 105}^{\circ} + {cos 105}^{\circ}$ $sin105^@ + cos105^@$
What is the period of $f (t) = sin (\frac{t}{6})$ $f(t)=sin( ( t) /6 )$ ?
How do you find sin if tan is 4?
How do you find the radian measure of an angle of 280?
How can i solve this equation: 2sen^2(t)-cos(t)-1=0 ?
How do you solve this equation: csc^4 2(u)-4=0 ?
Find $arcsin (- \frac{\sqrt{3}}{2})$ $arcsin(-sqrt3/2)$ ?
Suppose that β is an acute angle and sec β = 11 . 3. How to do the following?
How do you solve $sin (2 x - 1) = sin (3 x + 1)$ $sin(2x-1)=sin(3x+1)$ ?
How do I solve for 0 <= x < 2pi? tan x - sec x +1 = 0
Given the point (6,-8) on the terminal side of ø in standard position, find the exact value of csc ø?
What is the period of $f (θ) = tan (\frac{12 θ}{7}) - sec (\frac{7 θ}{6})$ $f(theta) = tan ( ( 12 theta)/7 )- sec ( ( 7 theta)/ 6 )$ ?
How do you use a calculator to evaluate $cos (\frac{8 π}{7})$ $cos((8pi)/7)$ ?
Given sinx=45 and cosx=35 . What is ratio for tanx ?
How do you solve sin(x)-cos(x/3)=0?
How does one find sin2x, cos2x, and tan2x if x is in quadrant IV and equals -2/ $\sqrt{13}$ $sqrt13$ ?
2cos^2x-sinx=-1?
SOLVE to the nearest four decimals?
SOLVE to the nearest four decimals?
Given sin 30degree=1/2 and sin 45degree=1/squareroot2. Find the exact value of sin 75degree and cos 75degree?
How do you answer this question?: Find the complete solution in radians: sin^2(θ) -1=cos^2(θ)
Solve 2sinxcosx-sqrt2cosx=0 for 0 <=x<=360degree?
Simplify completely: cos 75˚ cos 10˚ - sin 75˚ sin 10˚?
Simplify completely: 1 – 2sin2 50˚?
What are the six trig function values of $\frac{5 π}{3}$ $(5pi)/3$ ?
How to find all solutions to the following equations in the interval 0 ≤ θ < 2π?
Solve $cot (\frac{x}{2}) = \frac{\sqrt{3}}{3}$ $cot (x/2) = sqrt(3)/3$ ?
How do you solve using the completing the square method $4 x^{2} + 4 x + 1 = 49$ $4x^2 + 4x + 1 = 49$ ?
What would a name of a binomial factor of: 26y^2-172y-70 be ?
Solve the equation 2sin(2x-π/3)+1=0 on the domain -2π ≤ x ≤ 0?
Find an angle between 0 and 2π that is coterminal with −9π/2? .
Find all solutions for the following equations sin(2x)+sin(π/2-x)=0 ?
Cos (1/2 x) = 3/4?
Please could you explain how sin(x) + cos(x) = sqrt(2)sin(x+45)? I understand how you get sqrt(2) through sin(x)cos(45)+cos(x)sin(45). But I don’t. Understand how you end up with sin(x+45) or sin(x+π/4) depending on how you see it. Thanks a lot
How do you factor $2 (x^{2}) + 9 x + 7$ $2(x^2) + 9x + 7$ ?
Factorise $3 x^{2} + 2 x - 3$ $3x^2+2x-3$ ?
How do you solve multi step inequalities?
Given the point $P (\frac{\sqrt{3}}{2}, - \frac{1}{2})$ $P(sqrt3/2,-1/2)$ , how do you find $sin θ$ $sintheta$ and $cos θ$ $costheta$ ?
What is the period of $f (t) = sin (\frac{t}{6}) + cos (\frac{7 t}{24})$ $f(t)=sin( t /6 )+ cos( (7t)/24 )$ ?
CotA =5/12then sinA+cosa=?
How to find the exact solutions which lie in [0, 2π) for cos(5x) = −cos(2x)?
Let tan x = 2.4, sin y = 0.6, and both x and y be between 0° and 90°. Then cos(x + y) equals?
What is $\frac{cot 2 θ}{3}$ $(cot2theta)/3$ in terms of $tan θ$ $tantheta$ ?
How do you use a calculator to evaluate ${sec 225}^{\circ}$ $sec225^circ$ ?
Suppose α is an angle in standard position whose terminal side lies in Quadrant III. If tan α = 2 3 , find the value of sin α?
How can simplfiy sin(x+5*pi) ?
How do you find the exact value of $sin 50 cos 25 - cos 50 sin 25$ $sin50cos25-cos50sin25$ using the sum and difference, double angle or half angle formulas?
What are the solutions to 10(sec^2)x+5(tan^2)x-15=0 over the interval (0,2pi)?
How to find the general solution 5 sin(x)+2 cos(x)=3?
Plz help me how unit circle works plz ?
How do you solve and write the following in interval notation: $x^{2} - 2 x + 4 > 0$ $x^2-2x+4>0$ ?
Where is the vertex in the parabola y = x^2 +2x - 5? i dont understand this i need x and y intercepts and please show work?
X2 +14x-15=0 in this equation which add LHS as a perfect square 49. how this 49 will come... please tell about 49??? how this calculated
Use the information about the angle θ to find the exact value of?
How do you factor $6 x^{2} - 5 x - 25$ $6x^2-5x-25$ ?
How can you solve for tan theta in tan (theta) + tan 3 (theta) /1 -tan (theta) *3 (theta) = -1 with your answer in a surd form?
How do you evaluate $\frac{{sin}^{2} 15^{\circ} + {sin 75}^{\circ}}{{cos}^{2} 36^{\circ} + {cos}^{2} 54^{\circ}}$ $\frac { \sin ^ { 2} 15^ { \circ } + \sin 75^ { \circ } } { \cos ^ { 2} 36^ { \circ } + \cos ^ { 2} 54^ { \circ } }$ ?
If cos theta =2/3,find theta where 180°<theta<360° What is the theta?
How do I solve $cos x = (\frac{\sqrt{2}}{2})$ $cos x= (sqrt 2/2)$ for $- 2 π \leq x \leq 2 π$ $-2pi <=x<=2pi$ ?
How do you solve and find the value of ${cos}^{- 1} (\frac{1}{2})$ $cos^-1(1/2)$ ?
What is $cos (a r c sin (\frac{5}{13}))$ $cos(arc sin (5/13))$ ?
Use a double or half angle formula to determine value of cos(13π/12)?
Solve 4sinx-cosx+3=0 ?
How do you solve $3 tan x + 1 = 13$ $3tanx+1=13$ ?
If sina =-5÷13 and a lies in quadrant 3 then the value of cos (a÷2)?
How do I solve the equation 90 cos X - 14 sin X = 72?
How do you solve $5 {sin}^{2} x - 8 sin x = 3$ $5sin^2x-8sinx=3$ in the interval [0,360]?
How do you find the exact value of ${cos}^{- 1} (\frac{1}{2})$ $cos^-1(1/2)$ ?
Can anyone help in solving this problem? $14 u^{3} - 7 u^{3} - 8 u + 4$ $14u^3-7u^3-8u+4$
How do you find exact value of $sin (\frac{π}{6})$ $sin (pi/ 6)$ ?
What is the frequency of $f (θ) = sin 2 t - cos 5 t$ $f(theta)= sin 2 t - cos 5 t$ ?
If x is an acute angle, and cos x =4/5, then cos (2 x) is equal to?
How do you calculate ${sin}^{- 1} (0.1)$ $sin^-1(0.1)$ ?
How do you sketch the angle whose terminal side in standard position passes through (0,3) and how do you find sin and cos?
How do you simplify: cos^2x+cos^2(π/2-x) ?
What are the solutions of 6 tanx sinx-6 tanx=0 in the interval [0,2pi]?
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