Solve the following:

  • (sin3? + cos3?/sin? + cos?) + sin? + cos?

Asked by  | 11th Aug, 2012, 08:19: AM

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  | 11th Aug, 2012, 08:25: AM

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