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CBSE Class 10 Answered

prove that -1+ sin theta sin theta(90-theta) / cot(90-theta) = - sin theta
Asked by hasinaumar | 25 Feb, 2019, 07:18: PM
answered-by-expert Expert Answer
begin mathsize 12px style negative 1 space plus space fraction numerator sin theta space sin open parentheses 90 minus theta close parentheses over denominator c o t open parentheses 90 minus theta close parentheses end fraction space equals space minus 1 space plus space fraction numerator sin theta space sin open parentheses 90 minus theta close parentheses over denominator cos open parentheses 90 minus theta close parentheses end fraction cross times sin open parentheses 90 minus theta close parentheses space equals space minus 1 plus fraction numerator sin theta space cos squared theta over denominator sin theta end fraction space equals space minus 1 plus cos squared theta equals space minus sin squared theta end style
Answered by Thiyagarajan K | 26 Feb, 2019, 10:20: AM

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