JEE MATHEMATICS MCQ: MULTIPLE AND SUBMULTIPLE ANGLES

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Analyzing +4 | -1

Value of

{\cos ^2}\left( {A - B} \right)\,\, + \,\,{\cos ^2}B\,\, - \,\,2\cos \left( {A - B} \right)\cos A\,\,\cos B

View answer and explanation

Correct option: B

{\sin ^2}A

Option B (

{\sin ^2}A

) is correct because by applying trigonometric identities and simplification, the expression reduces to

{\sin ^2}A

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