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## If (sinθ+cosθ)=√2sinθ, show that (sinθ-cosθ) = √2cosθ

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This is the basic and exam oriented question from trigonometry, topic – trigonometric identities in which we have given that ...Read more

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Guru

## Prove that: (1-cos²θ)cosec²θ=1

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This question is from trigonometry topic – trigonometric identities in which we have been asked to prove that (1-cos²θ)cosec²θ=1 RS Aggarwal, ...Read more

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Guru

## Prove that: 2/3cosec²58° – 2/3cot58°tan42° – 5/3tan13°tan37°Tan45°tan53°tan77° = -1

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This question is from trigonometry topic – trigonometric ratios on complementary angles and it is already asked in previous year ...Read more

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Guru

## If sec4A = cosec(A-15°), where 4A 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 to find the value ...Read more

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Guru

## 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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Guru

## If sin3A = cos(A-26°), where 3A 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 to find the value of ...Read more

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Guru

## If sec2A = cosec(A-42°) 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 to find the value of ...Read more

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Guru

## If cos2θ = sin4θ, where 2θ and 4θ are acute angles, find the value of θ.

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

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Guru

## If A, B and C are the angles of a ΔABC, prove that tan(C+A)/2 = cotB/2

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This question is from trigonometry topic- trigonometric ratios on complementary angles in which we have to prove that tan(C+A)/2 = ...Read more

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Guru

## Express the following in terms of T-ratios of angles lying between 0° and 45°: cosec54° + sin72°

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