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Trig Doubt

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

Note by Swapnil Das
1 year, 9 months ago

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Just divide the numerator and denominator of the LHS by \( \tan\theta\) Aditya Chauhan · 1 year, 9 months ago

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@Aditya Chauhan Thank you for helping! Swapnil Das · 1 year, 9 months ago

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@Swapnil Das No problem Aditya Chauhan · 1 year, 9 months ago

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Comment deleted Jun 14, 2015

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@Aakash Mandal RD Sharma- 11 Swapnil Das · 1 year, 9 months ago

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Use componendo dividendo Aditya Kumar · 1 year, 9 months ago

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Whoever edited it, Thanks! Swapnil Das · 1 year, 9 months ago

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