Mathematics, 16.12.2021 06:10 deduran

Which of the following is an identity? A. sin^2x=4-2cos^2x
B. sec x tan x-cos xcot x+sin x
C. (tan x+cot x)(sin x cos x)=1
D. cos x(2sin x+1)=0

Answers: 2

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Which of the following is an identity? A. sin^2x=4-2cos^2x B. sec x tan x-cos xcot x+sin x C. (tan x+cot x)(sin x cos x)=1 D. cos x(2sin x+1)=0

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Another question on Mathematics

Which of the following is an identity? A. sin^2x=4-2cos^2x
B. sec x tan x-cos xcot x+sin x
C. (tan x+cot x)(sin x cos x)=1
D. cos x(2sin x+1)=0