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ICSE Class 10 Answered

Plz.answer 2nd part
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Asked by lovemaan5500 | 04 Feb, 2018, 05:38: PM
answered-by-expert Expert Answer
begin mathsize 16px style straight L. straight H. straight S. equals fraction numerator left parenthesis 1 minus 2 sin squared space straight theta right parenthesis squared over denominator cos to the power of 4 space straight theta minus sin to the power of 4 space straight theta end fraction equals fraction numerator left parenthesis 1 minus sin squared space straight theta minus sin squared straight theta right parenthesis squared over denominator left parenthesis cos squared space straight theta right parenthesis squared minus left parenthesis sin squared space straight theta right parenthesis squared end fraction equals fraction numerator left parenthesis cos squared space straight theta minus sin squared straight theta right parenthesis squared over denominator left parenthesis cos squared space straight theta minus sin squared straight theta right parenthesis left parenthesis cos squared plus sin squared space straight theta right parenthesis end fraction equals fraction numerator left parenthesis cos squared space straight theta minus sin squared straight theta right parenthesis squared over denominator left parenthesis cos squared space straight theta minus sin squared straight theta right parenthesis end fraction equals cos squared space straight theta minus sin squared space straight theta straight R. straight H. straight S. equals 2 cos squared straight theta minus 1 equals 2 cos squared space straight theta minus left parenthesis sin squared plus cos squared space straight theta right parenthesis equals 2 cos squared space straight theta minus sin squared space straight theta minus cos squared space straight theta equals cos squared space straight theta minus sin squared space straight theta end style
Answered by Rashmi Khot | 05 Feb, 2018, 09:00: AM

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