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CBSE Class 11-science Answered

F I N D space T H E space V A L U E space O F space cos left parenthesis negative fraction numerator 5 straight pi over denominator 12 end fraction right parenthesis

Asked by Topperlearning User | 31 Aug, 2016, 09:36: PM
Expert Answer

cos left parenthesis negative fraction numerator 5 straight pi over denominator 12 end fraction right parenthesis equals cos left parenthesis fraction numerator 5 straight pi over denominator 12 end fraction right parenthesis
fraction numerator 5 straight pi over denominator 12 end fraction equals 75 to the power of 0
cos left parenthesis 75 right parenthesis equals cos left parenthesis 45 plus 30 right parenthesis equals cos 45 cos 30 minus sin 45 sin 30
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals fraction numerator 1 over denominator square root of 2 end fraction fraction numerator square root of 3 over denominator 2 end fraction minus fraction numerator 1 over denominator square root of 2 end fraction 1 half equals fraction numerator square root of 3 minus 1 over denominator 2 square root of 2 end fraction

Answered by | 31 Aug, 2016, 11:36: PM
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F I N D space T H E space V A L U E space O F space cos left parenthesis negative fraction numerator 5 straight pi over denominator 12 end fraction right parenthesis
Asked by Topperlearning User | 31 Aug, 2016, 09:36: PM
ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by Topperlearning User | 31 Aug, 2016, 09:38: PM
ANSWERED BY EXPERT
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