class 10 cbse Archives - Page 30 of 35

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Rajan@2021Guru

Asked: April 5, 2021In: CBSE

In the adjoining figure, ∆ABC is a right-angled at B and ∠A = 45°. If AC = 3√2 cm, Find (i) BC, (ii) AB

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This is the basic and conceptual question from trigonometric ratios in which we have given a figure of right angled ...Read more

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Rajan@2021Guru

Asked: April 5, 2021In: CBSE

Using the formula, tan 2A = (2tanA) / (1-tan 2A), find the value of tan 60°; given that tan30° = 1/√3…

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This is the basic and conceptual question from trigonometric ratios in which we have given tan2A = (2tanA) / (1-tan 2 ...Read more

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Rajan@2021Guru

Asked: April 5, 2021In: CBSE

If A = 60° and B = 30° verify that cos(A-B) = cosA cosB – sinA sinB

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This is the basic and exam oriented question from trigonometric ratios in which we have given A = 60° and ...Read more

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Rajan@2021Guru

Asked: April 5, 2021In: CBSE

If A = 60° and B = 30° verify that sin(A-B) = sinA cosB – cosA sinB

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This is the basic and conceptual question from trigonometric ratios in which we have given A = 60° and B ...Read more

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Rajan@2021Guru

Asked: April 5, 2021In: CBSE

If A = 60° and B = 30° verify that cos(A+B) = cos A cos B – sin A Sin B

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This is the basic and conceptual question from trigonometric ratios in which we have given A = 60° and B ...Read more

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Rajan@2021Guru

Asked: April 5, 2021In: CBSE

If A = 60° and B = 30° verify that sin(A+B) = sin A cos B + cos A sin B

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This is the basic and conceptual question from trigonometric ratios in which we have given A = 60° and B ...Read more

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Rajan@2021Guru

Asked: April 5, 2021In: CBSE

If A = 30° verify that tan 2A = 2tan A/(1 – tan^2 A)

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This is the basic and conceptual question from trigonometric ratios in which we have given A = 30° We need ...Read more

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Rajan@2021Guru

Asked: April 5, 2021In: CBSE

If A = 30° verify that cos 2A = (1 – tan^2A)/(1 + tan^2 A)

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This is the basic and conceptual question from trigonometric ratios in which we have A = 30° We asked to show ...Read more

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Rajan@2021Guru

Asked: April 5, 2021In: CBSE

If A = 30° verify that sin 2A = 2tan A/(1 + tan^2A)

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This is the basic and exam oriented question from trigonometric ratios in which we have given A = 30° We ...Read more

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Rajan@2021Guru

Asked: April 5, 2021In: CBSE

If A = 45° verify that cos 2A = 2cos^2 A -1 = 1 – sin^2 A

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This is the basic and conceptual question from trigonometric ratios in which we have given A = 45° We have to ...Read more

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