Rewrite with only sin x and cos x.

sin 2x - cos 2x

--

Rewrite with only sin x and cos x. (1 point)

sin 2x - cos 2x

a.2 sinx cosx - 1 + 2 sin²x

b.2 sin x cos²x - 1 + 2 sin²x

c.2 sin x cos²x - sin x + 1 - 2 sin²x

d.2 sin x cos²x - 1 - 2 sin²x

-----

Verify this identity:

cot(x-pi/2)= -tan x

------

Find all solutions to the equation.

(sin x)(cos x) = 0

---

Verify this identity

cos(x+pi/2)= -sin x