Questions asked by Daniel Tan

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• Prove #(sin x - csc x)^2 = sin^2x + cot^2x - 1.# Can anyone help me on this?
  
• Solve the eqn 25 cos x = 16 sin x tan x for 0 < or = x < or = 360. Could anyone help me on this?
  
• Hi guys! Can anyone help me solve this question? Just started learning this chapter so I'm not quite familiar with this : Given sin theta = 1/2 and that theta is an acute angle. Evaluate sin 2 theta & sec 2 theta.
  
• Can anyone solve this? Prove cos A / sin B - sin A / cos B = 2 cos (A+B) / sin 2B
  
• Can anyone help me on this? Solve sin 2 theta + sin theta - tan theta = 0 for 0 < or = theta = or > 360
  
• Hi there! Can anyone help solve this? :) Given tan theta = p and that theta is an acute angle, find sec 2 theta and cot (90-2theta)
  
• Find the number of 4-digit numbers greater than 3000 that can be formed from prime numbers from 1 to 10 without repetitions. ( Can't solve by listing out the possible outcomes without calculations )?
  
• If #x^2# + #y^2# = #3xy#, show that #log (x-y) = 1/2(log x + log y) How do you solve this?