Determine the exact value of cos(Pi/24)???

Determine the exact value of cos(Pi/24)???

How do I rewrite (tanθ+secθ)/cosθ in terms of sinθ? (fully simplified)

Please use special angles of the unit circle and any trigonometry identities if used.

Trigonometry Identities and equation

prove that tan6.tan42.tan66.tan78=1

solve the equation for the solutions over the interval [0 degrees, 360 degrees) 6sec2xtanx=12tanx I am unsure of where to begin.

cos(3theta)=-1 solve for exact solutions over the interval [0,360 degrees] I am having trouble finding a place to start.

This question is about to prove some trigonometric identities

Proving identities

cos(2θ) = 1/√2 (1 divided by square root 2) 90° ≤ θ ≤ 180°

Find the exact value algebraically of sin(105°)

(sinx)/(cosx-sinx)=cotx+1, find x

Solve step by step to get the answer

The question is- In a △PQR, if 3sinP+4cosQ = 6 and 4sinQ+3cosP=1, then the angle R is equal to:

sinxcos^4x+cos^6x=

Hi, this is my first time using this site. So I have been staring at this trigonometric equation for a long while and looking for what it asks for. For what I know, I think I have to use sum of...

Prove sin4x = 4 (sin x-2 sin^3 x)/secx I can't seem to solve this! Halp!!!

Solve the given equation over the interval [0,2): 2sinx+ (sqrt 3) sin^2x=-(sqrt 3) cos^2x A. x=0, and x=(pi/2), and x=(3 pi/2), and x=2(pi)x=(3 pi/2), and x=(7 pi/2) b. x=(4 pi/3) and...

Provide an exact evaluation of the expression: tan (-285°).

Find the value for sin (θ) if the following conditions hold: cos(2(theta)) = 3/5 and 90(degrees) < (theta) < 180(degrees) A. (1/25) B. (sqrt5/25) C. (2 sqrt5/5) D. (sqrt5/5)