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## If (x/a sinθ – y/b cosθ) =1 and (x/a cosθ + y/b sinθ) =1, prove that (x²/a² + y²/b²) =2

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This is the basic and exam oriented question from trigonometric identities in which we have given that (x/a sinθ – ...Read more

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## Prove that: √(1-cosθ)/(1+cosθ) = cosecθ-cotθ

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This question is from trigonometry topic – trigonometric identities in which we have to show that √(1-cosθ)/(1+cosθ) = cosecθ-cotθ RS Aggarwal, Class ...Read more

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## Prove that: tanθ/(secθ-1) + tanθ/(secθ+1) = 2cosecθ

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This question is from trigonometry topic – trigonometric identities in which we have been asked to prove that tanθ/(secθ-1) + ...Read more

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## Prove that: (1-tan²θ)/(cot²θ-1) = tan²θ

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This question is from trigonometry topic – trigonometric identities in which we have been asked to prove that (1-tan²θ)/(cot²θ-1) = ...Read more

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## If tan2A = cot(A-12°), where 2A is an acute angle, find the value of A.

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This question is from trigonometry topic -trigonometric ratios on complementary angles in which we have been asked to find the ...Read more

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## Without using trigonometric tables, prove that cosec^2 72° – tan^2 18° = 1

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This is the basic and conceptual question from trigonometric ratios in which we have to prove that cosec^2 72° – ...Read more