JEE MATHEMATICS MCQ: TRIGONOMETRY RATIOS

1 Easy

1 of 1

Application +4 | -1

\sin \,\,\theta + \cos \,\,\theta = \sqrt 2 \cos \,\,\theta

then

\cos \,\,\theta - \sin \,\,\theta

is equal to

View answer and explanation

Correct option: B

\sqrt 2 \,\,\sin \theta

Option B (

\sqrt 2 \,\sin \theta

) is correct because it is derived by squaring the given equation and using trigonometric identities to find the value of

\cos \theta - \sin \theta

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C

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\sin ^2(A / 2)+\sin ^2(B / 2)-\sin ^2(C / 2)=