If $\left(a \sin ^4 \theta+b\right)(a+b)=a b \cos ^4 \theta$, then

JEE MATHEMATICS MCQ: TRIGONOMETRIC EQUATIONS

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\left(a \sin ^4 \theta+b\right)(a+b)=a b \cos ^4 \theta

, then

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Correct option: A

|a| \geq|b|

Option A (

|a| \geq |b|

) is correct because it is derived from the given equation and trigonometric identities.

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\left( {x,\,y} \right)

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\tan x