Answers created by Nghi N.

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How do you prove cosx/2+sinx/2= 1+tanx/2 ?
What is the frequency of $f (θ) = sin 12 t - cos 5 t$ $f(theta)= sin 12 t - cos 5 t$ ?
How do you find the vertex and intercepts for $f (x) = 10 x^{2} - 5 x + 12$ $f(x) = 10x^2 - 5x + 12$ ?
How does one find the exact values of sec, tan, and sin given the angle is in standard position whose terminal sides intersect at (-12/37, -35/37)?
How do I solve a sum and difference trig equation for the smallest positive solutions?
How do I solve sec(2x)-7=0 for the four smallest positive solutions?
How do I solve for the two smallest positive solutions for: sin(2x)cos(6x)-cos(2x)sin(6x) = -0.35 ?
Solve equation: (Is my answer correct ?)
Solve equation: (Is my answer correct ?)
If 0*<theta<360*, find all values of theta, 2sintheta = 5costheta?
How do I evaluate sin from cos and use symmetry arguments?
Sin x cosec x/8=?
How do you find two solution to $sin (x) = \frac{1}{2}$ $sin(x) = 1/2$ ?
Why does sin(90 + angle ) =cos angle because on using above property it should br - cos angle?
How to prove: cos^2(2x) - sin^2(x) = cos(x).cos(3x)?
How do you sketch the angle whose terminal side in standard position passes through $(- 9, - 40)$ $(-9,-40)$ and how do you find sin and cos?
If tanx= -1/3, cos>0, then how do you find cos2x?
How to prove: cos^2(2x) - sin^2(x) = cos(x).cos(3x)?
How do you factor and solve $- x^{2} - 2 x + 3 = 0$ $-x^2-2x+3 = 0$ ?
3(x-2)^2 -5 what is the vertex?
Solve $2 {csc}^{2} x = 2 {sec}^{2} x$ $2csc^2x = 2sec^2x$ ?
How do you solve cos 2x − 2 sin2 x = 0 interval (−5, 5]?
How do you solve this system of equations: $3 x + 2 y \leq - 1; x + 4 y > - 12$ $3x + 2y \leq - 1; x + 4y > - 12$ ?
How do you factor completely $8 x^{3} - 20 x^{2} + 6 x - 15$ $8x^3-20x^2+6x-15$ ?
$2 arctan (\frac{1}{2}) + arctan (\frac{1}{7}) =$ $2arctan(1/2)+arctan(1/7)=$ ?
How do you solve ?
How do you use a calculator to approximate ${tan}^{- 1} (- \frac{95}{7})$ $tan^-1(-95/7)$ ?
Shouldn't the answer to this problem be A, not D. Since we are working with the second quadrant, would it be negative... or did I just do it completely wrong? Thank you so much for your help!
How do you simplify ${(sec θ + tan θ)}^{2}$ $(\sec \theta + \tan \theta ) ^ { 2}$ ?
How do you solve ${cot}^{2} θ = \sqrt{3} cot θ$ $cot^2theta=sqrt3 cottheta$ in the domain $0 \leq θ \leq 360$ $0<=theta<=360$ ?
How do you find the exact values of sin 2u, cos 2u, and tan 2u using the double-angle formulas?
How do you find the values of $θ$ $theta$ given $csc θ = 2$ $csctheta=2$ ?
How do you find arcsin(-1/2) ?
If x belongs to (0,π/2), the number of solutions of the equation sin7x+sin4x+sinx=0?
Solve 5sinθ+2cosθ=5?
Number of solutions of sinx.tan4x=cosx in (0,π) ?
Number of solutions of sin^2θ+3cosθ=3 in [-π,π] ?
Given that $sin θ cos θ = \frac{7}{50}$ $sin theta cos theta =7/50$ and $0^{0} < θ < 90^{0}$ $0^0 < theta < 90^0$ . Find the value of $cos θ$ $cos theta$ .?
Solve:4cosθ-3secθ=2tanθ?
The general solution of equation sinx+sin5x=sin2x+sin4x is?
How do you find cos 11pi/12?
If I have a triangle where $cos u = - \frac{5}{7}$ $cos u = -5/7$ and $sin u > 0$ $sin u >0$ , how do I find the sine, tangent, cotangent, secant, and cosecant of the angle u?
Solve: tan²θ-(1+√3)tanθ+√3=0?
How do you find all values of $θ$ $theta$ for which $sec (θ) = 2$ $sec(theta)=2$ where $0^° < theta < 540^°$ ?
If 2cos²(π+x)+3sin(π+x) vanishes then the values of x lying in the interval from 0 to 2π is x=π/6 or 5π/6. Explain how?
Give 2 co- terminal angles and the reference angle for 215?
How do you use the half-angle identity to find the exact value of Cos(-22.5)?
What is the answer of 1-cot²a=?
How do you solve $2sin2xcos2x$ ?
How do you solve $2cos^2x+cosx -1=0$ for $0<=x<=2pi$ ?
How do you evaluate $csc^-1(-sqrt2)$ without a calculator?
Solve cos θ+sin θ=cos 2θ+sin 2θ?
Solving trigonometric equations: Give the two smallest solutions of cos(5theta)=0.1495, on [0,2pi). Where do I begin?
How do you write an equation of the sine function with amplitude of 3 and period of 4pi over 5?
The point $(3 1/2, -7 3/4)$ is on the terminal side of an angle in standard position, how do you determine the exact values of the six trigonometric functions of the angle?
If sin theta =4/5& theta is not Frist quadrant ,find the value of cos theta?
Solve $sin^2(x)=cos(x$ )for all solutions 0≤x<2π. Ask for X? Give your answers accurate to 2 decimal places, as a list separated by commas
How do you find all solutions to sin (2x + 1) = 0.2?
How do you find the general solutions for $cos(x) = 0.6$ ?
How do you find the coordinates of the terminal points corresponding to the following arc length on the unit circle: -9π/-4?
How would I solve this? 2sin^2 x - cos(x + pi/2) - 1 = 0 for -pi < x < pi
If $sin theta = 1/4$ , theta in quadrant 2, how do you find the exact value of $sin(theta - pi/3)$ ?
If Tan(x) = 2, and 0 < x < 2pi, find the exact value of Sin(x + pi/4)?
How do you evaluate sin(arccos 3/4)?
What is the value of sin theta given that (5, 12) is a point on the terminal side of theta?
6x^2-10x-16=0?
How do you graph the inequality $2y>=x-3$ ?
How do you find the reference angle for $(theta) = 300$ ?
How do solve the equation? (Find all solutions of the equation in the interval [0, 2π). sin(2x) − sin(x) = 0
Use the product-to-sum formulas to rewrite the product as a sum or difference. 9 cos(−9β) sin 5β?
Find the exact value of the trigonometric expression given that sin(u) = − 3/5, where 3π/2 < u < 2π, and cos(v) = 15/17, where 0 < v < π/2. ? cos(u−v)
Find the exact values of the sine, cosine, and tangent of the angle. 11π/12 = 3π/4 + π/6. how will I determine Sin 11π/12, Cos 11π/12, and Tan 11π/12?
X^2+8x+1<0 Inequality questions What will be the answer ? Plz tell
What is $sin(2 arcsin(3/5))$ ?
Possible solutions as exact values for $cos theta=1/sqrt(2)$ ?
How to solve $tg^2x-(1+sqrt3)tgx+sqrt3<0$ ?
How to solve $sin3x<sinx$ ?
Use the fundamental identities to simplify the expression. Please, someone, help me? 1 − cos2 x / sec2 x − 1
Please, how do I factor the expression? Use the fundamental identities to simplify, if necessary. 1 − 2 cos2(x) + cos4(x)?
How do I solve $sinx-sqrt3sin3x+sin5x<0$ ?
How do you solve $4cos(t)=3$ ?
Please, can anyone help me with this help to solve this question?. Verify that each x-value is a solution of the equation. 3 tan^2(5x) − 1 = 0. (a) x = pi/30 (b) x =5pi/30
Sinxcosx=1/2√2?
What is the vertex form of $y=3x^2+4x+1$ ?
How do you solve $2x²-x+8=0$ ?
How do you find the zeros, real and imaginary, of $y=-5x^2-3x+29$ using the quadratic formula?
Find the value of cos11π/12?
How to solve $1+2cos^2(x+pi/6)=3sin(pi/3-x)$ ?
How do you simplify $cot (3π/2 - a)$ ?
Solve the equation $secx=1+tanx$ ?
What is the period of $f(t)=sin( t /13 )+ cos( (13t)/24 )$ ?
1+tan^2x/2tanx=?
How do you do (sin^4x - sin^2x cos^2x + cos^4x) ?
How do you find the exact values of the six trigonometric function of $theta$ if the terminal side of $theta$ in the standard position contains the point (5,-8)?
How to solve $cos(pi/4-x)=sin(pi/6+x)$ ?
How do you solve $4x^2+17x+15=0$ ?
How do you sketch the angle whose terminal side in standard position passes through (-8,15) and how do you find sin and cos?
The point $(-4,1)$ is on the terminal side of an angle in standard position, how do you determine the exact values of the six trigonometric functions of the angle?
Sin (alpha-540°) Explain and Answer The Value?
If $0 < x < phi$ , prove that : $sin (x/2) = sqrt((1-cos x)/2)$ ?
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