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Verifying Trigonometric Identities

Verify the following identities:

a. cos x (tan^2 x + 1) = sec x
b. 1
_________ = 1
tan x csc x

c. (sin^2 x - sin^4 x)cos x = cos^3 x sin ^2 x

Solution Summary

Trigonometric identities are verified. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.