Question

Please help me with a precalc assignment!

Answer 1

Answer:

Trigonometric functions can be simply defined as the functions of an angle of a triangle.

The basic trigonometric functions are sine, cosine, tangent, cotangent, secant and cosecant.

sine sum identity:  

In sine sum identity , sin(x), cos(x), sin(y) and cos (y) is used.

Some identities shown below,

   Explanation:

so its c cos(x)

Answer 2

Answer:

its be cos(x)

Explanation:

i cant explain because i might get caught by my teacher being on this