WB JEE 2019 | Trigonometric Functions & Equations Question 35 | Mathematics

WB JEE 2019

MCQ (Single Correct Answer)

-0.25

If $${e^{\sin x}} - {e^{-\sin x}} - 4 = 0$$, then the number of real values of x is

WB JEE 2019

MCQ (Single Correct Answer)

-0.5

The graphs of the polynomial x² $$-$$ 1 and cos x intersect

at exactly two points

at exactly 3 points

at least 4 but at finitely many points

at infinitely many points

WB JEE 2018

MCQ (Single Correct Answer)

-0.25

The approximate value of sin31$$^\circ$$ is

> 0.5

> 0.6

< 0.5

< 0.4

WB JEE 2018

MCQ (Single Correct Answer)

-0.25

If sin6$$\theta$$ + sin4$$\theta$$ + sin2$$\theta$$ = 0, then general value of $$\theta$$ is

$${{n\pi } \over 4},n\pi \pm {\pi \over 3}$$

$${{n\pi } \over 4},n\pi \pm {\pi \over 6}$$

$${{n\pi } \over 4},2n\pi \pm {\pi \over 3}$$

$${{n\pi } \over 4},2n\pi \pm {\pi \over 6}$$

WB JEE Subjects