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CBSE Class 10 Answered

Solve the following:(sin3? + cos3?/sin? + cos?) + sin? + cos?
Asked by | 11 Aug, 2012, 08:19: AM
answered-by-expert Expert Answer
sin3A + cos3A/ (sinA + cosA) + sin A + cosA
= (sin + cosA) (sin2A + cos2A - sin A cosA)/ (sinA + cosA) + sin A + cosA
= (1 - sin A cosA) + sin A + cosA
= sinA + cosA - sinAcosA + 1
Answered by | 11 Aug, 2012, 08:25: AM

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