Verify that the equation is an identity. sin (x-y) tanx-tany = sin (x+y) tanx+ tany Which of the following statements verifies that the equation is an identity? OA. 1- cos (x - y) sin(x-y) sin(x-y) tan x-tany tan x + tany sin (x + y) . 1- cos (x+y) sin (x + y) OB. sin (x-y) sin cosy- cos x sin y = # sin (x+y) sin x cos y + cos xsin y O C. sinx siny tanx-tany COS X cos y tan x + tany sin x sin y cos X cos y Click to select your answer. = + sin x- cos y sin y + cos x sin x cosy - cos x siny sin x cos y + cos xsin y = tan x-tany tan x + tany sin (x-y) sin (x+y) Use identities to find values of the sine and cosine functions of the function for the angle measure. 3 29, given sin = and cos 8>0 5 cos 20 0 (Simplify your answer, including any radicals. Use Integers or fractions for any numbers in the expression.) sin 20 0 (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)