Use identities to find values of the sine and cosine functions of the function for the angle mea

Name: Use identities to find values of the sine and cosine functions of the function for the angle measure. 2x, given tan x = 4 and cos x < 0. cos 2x = (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)
Uploaded: 2022-05-03T01:56:13-08:00
Duration: 2 min 26 s
Channel: Kathleen Carty
Description: Use identities to find values of the sine and cosine functions of the function for the angle measure. 2x, given tan x = 4 and cos x < 0. cos 2x = (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)

Question

Kathleen Carty · Accepted Answer

Step 1: Given that tan(x) = 4, we can create a right triangle in the second quadrant where the o

Question

Use identities to find values of the sine and cosine functions of the function for the angle measure. 2x, given tan x = 4 and cos x < 0. cos 2x = (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)

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