1
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.25
Change Language
The approximate value of sin31$$^\circ$$ is
A
> 0.5
B
> 0.6
C
< 0.5
D
< 0.4
2
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.25
Change Language
If sin6$$\theta$$ + sin4$$\theta$$ + sin2$$\theta$$ = 0, then general value of $$\theta$$ is
A
$${{n\pi } \over 4},n\pi \pm {\pi \over 3}$$
B
$${{n\pi } \over 4},n\pi \pm {\pi \over 6}$$
C
$${{n\pi } \over 4},2n\pi \pm {\pi \over 3}$$
D
$${{n\pi } \over 4},2n\pi \pm {\pi \over 6}$$
3
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
The equation $$\sin x(\sin x + \cos x) = k$$ has real solutions, where k is a real number. Then,
A
$$0 \le k \le {{1 + \sqrt 2 } \over 2}$$
B
$$2 - \sqrt 3 \le k \le 2 + \sqrt 3 $$
C
$$0 \le k \le 2 - \sqrt 3 $$
D
$${{1 - \sqrt 2 } \over 2} \le k \le {{1 + \sqrt 2 } \over 2}$$
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Graduate Aptitude Test in Engineering
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CBSE
Class 12