JEE MATHEMATICS MCQ: TRIGONOMETRY RATIOS

1 Easy

1 of 1

Application +4 | -1

\cos (\theta-\alpha)=a, \sin (\theta-\beta)=b

, then

\cos ^2(\alpha-\beta)+2 a b \sin (\alpha-\beta)

is equal to

View answer and explanation

Correct option: B

a^2+b^2

Option B (

a^2+b^2

) is correct because using trigonometric identities, the given expression simplifies to

a^2 + b^2

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