1 Answered Questions for the topic Proving Trigonometric Identities

Proving Trigonometric Identities Trigonometry Trigonometry Identities

10/07/15

Verify/prove: (1-cos^2x)(1+cos^2x) = 2sin^2x-sin^4x
I chose to manipulate the left hand side. So i got 1+cos2x-cos2x-cos4x when i simplify it will be 1-cos4x i will break it into pieces so (1-cos2x)(1+cos2x) i can change the first term to sin so... more
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