I am doing sum and difference formulas with sin, cos, and tan. I am doing tan75 with the difference formula. So tan 120-45 I have all the things found I just don't know...

I am doing sum and difference formulas with sin, cos, and tan. I am doing tan75 with the difference formula. So tan 120-45 I have all the things found I just don't know...

In this problem angle theta must be greater than 0 and lesses than 2 pi

The questions are: "If sin B = -1/3 with B in QIII, find tan B/2. Also find sin B/2 The answer for tan B/2 is-3-2sqrt(2) The answer for sin B/2 is \sqrt((3+2\sqrt(2))/(6)) These...

If sinθ=5/13 is in quadrant 2, what is the value of sin(θ+3pi/2)?

The question is cos -105. I know how to do the process for it but for some reason my answer doesn't have the right negatives. I am getting: √2 + (-√6) -------------- ...

I need this solution urgently please......

simplify and show all work please

simplify and show all work please

Prove each of the following identities

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

If csc(α) = 3, where 0 < α < π/2, and β is a Quadrant II angle with tan(β) = −7, find cos(α+β) And there are others that I'm supposed to find, such as sin(α+β),...

4 sin x cos x - 2√3 sin x - 2√2 cos x +√6=0 interval 0≤x<2pi

This is translated from a trigonometry problem in another language, I hope you understand it.

I am getting stuck at 7 plus or minus sqrt 309 / 26 13sin^2x-7sinx=5 solve for interval [0,360degrees]

they are squared and to the power of 4

This is my work. tanx = -2sinx sinx/cosx = -2sinx sinx = -2sinxcosx (multiply by cosx) 1 = -2cosx (divide...

Proving identities

If sin(x) = 1/4 and x is in quadrantI,find the exact values of the expressions without solving for x. (a) sin(2x) (b) cos(2x) (c) tan(2x)

show that 1/(1-cos x) - 1/(1+cos x)=2cosec x cot x

I know how to get the answer, but for some reason, they want it in this format and I'm not sure how to do it this way.