what is the exact value of cos 15

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what is the exact value of cos 15

Guest May 7, 2014

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Best Answer

+118724

+5

cos15=cos(45-30) and

cos(a-b)=cosa cosb + sina sinb

that should help.

Melody May 7, 2014

1⁺⁰ Answers

+118724

+5

Best Answer

cos15=cos(45-30) and

cos(a-b)=cosa cosb + sina sinb

that should help.

Melody May 7, 2014

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