Math, asked by thangavel41, 10 months ago

multiple angle identities​

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Answered by Anonymous
1

Double‐Angle and Half‐Angle Identities. ... Using the Pythagorean identity, sin 2 α+cos 2α=1, two additional cosine identities can be derived. and. The half‐angle identities for the sine and cosine are derived from two of the cosine identities described earlier

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