JEE MATHEMATICS MCQ: TRIGONOMETRY RATIOS

1 Easy

1 of 1

Application +4 | -1

x^2+y^2=1 ; x

y \in R

, then

\left(3 x-4 x^2\right)^2

+\left(3 y-4 y^3\right)

is equal to

View answer and explanation

Correct option: A

1

Option A (1) is correct because by substituting

x = \cos t

and

y = \sin t

, the expression simplifies to

(\cos 3t)^2 + (\sin 3t)^2

, which equals 1.

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