JEE MATHEMATICS MCQ: TRIGONOMETRIC EQUATIONS

1 Easy

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Application +4 | -1

The number of roots of the equation,

{\left( {81} \right)^{\sin }}^{^2x} + {\left( {81} \right)^{\cos }}^{^2x} = 30

in the interval

\left[ {0,\,\pi } \right]

is equal to:

View answer and explanation

Correct option: C

Option C (4) is correct because solving the trigonometric equation yields four solutions within the specified interval [0, π].

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