Question 18: If \( \tan \theta = \frac ab\), show that \( \frac{a \sin \theta - b \cos \theta}{a \sin \theta + b\cos \theta} = \frac{a^2-b^2}{a^2+b^2} \).

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TopNewestJust divide the numerator and denominator of the LHS by \( \tan\theta\)

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Thank you for helping!

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No problem

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Comment deleted Jun 14, 2015

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RD Sharma- 11

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Use componendo dividendo

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Whoever edited it, Thanks!

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