ICSE Class 10 Answered
prove that:
sin^3/cosA + sinAcosA = tanA
Asked by Vru23 | 28 Jul, 2020, 23:18: PM
To prove: sin3A/cosA + sinAcosA = tanA
![LHS equals fraction numerator sin cubed straight A over denominator cosA end fraction plus sinA space cosA
equals fraction numerator sin cubed straight A over denominator cosA end fraction plus fraction numerator sinA space cos squared straight A over denominator cosA end fraction
equals fraction numerator sin cubed straight A plus sinA space cos squared straight A over denominator cosA end fraction
equals fraction numerator sinA open parentheses sin squared straight A plus cos squared straight A close parentheses over denominator cosA end fraction
equals sinA over cosA
equals tanA
equals RHS
Hence comma space fraction numerator sin cubed straight A over denominator cosA end fraction plus sinA space cosA equals tanA](https://images.topperlearning.com/topper/tinymce/cache/e93fc97fd72b90ec77c0861d68893c32.png)
Answered by Renu Varma | 29 Jul, 2020, 10:38: AM
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