MAT136H1 Lecture Notes - List Of Trigonometric Identities
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MAT136H1 Full Course Notes
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Question #2 (medium): evaluating the integral of sine & cosine with even power. When and or are raised to even power, half-angle identities are helpful in reducing the even power by half every time it is applied. Then the reduced power, in conjunction with trigonometric identities, the integral can be simplified and evaluated. Since both and are raised to even power, no single term can be isolated. By applying half- angle identities, even power is reduced by half every time it is applied. Then the three components in the integral can be evaluated separately.