If \cos(\alpha + \beta) = 0, then value of \cos\left(\frac{\alpha + \beta}{2}\right) is equal to:... | MCQ 1m | Maths | SuperPadhai

Introduction To Trigonometry > Question

MCQ1 markYear: 2024EasyCBSE Class 10

trigonometrycomplementary-angles

Question

If

cos (α + β) = 0

, then value of

cos (\frac{α + β}{2})

is equal to:

Solution

1

cos (α + β) = 0 \Rightarrow α + β = 90°

cos (\frac{α + β}{2}) = cos 45° = \frac{1}{2}

+1 mark

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