1
WB JEE 2009
MCQ (Single Correct Answer)
+1
-0.25

In triangle ABC, a = 2, b = 3 and sin A = 2/3, thne B is equal to

A
30$$^\circ$$
B
60$$^\circ$$
C
90$$^\circ$$
D
120$$^\circ$$
2
WB JEE 2009
MCQ (Single Correct Answer)
+1
-0.25

Simplest form of $${2 \over {\sqrt {2 + \sqrt {2 + \sqrt {2 + 2\cos 4x} } } }}$$ is

A
sec x/2
B
sec x
C
cosec x
D
1
3
WB JEE 2009
MCQ (Single Correct Answer)
+1
-0.25

If $$5\cos 2\theta + 2{\cos ^2}\theta /2 + 1 = 0$$, when $$(0 < \theta < \pi )$$, then the values of $$\theta$$ are

A
$${\pi \over 3} \pm \pi $$
B
$${\pi \over 3},{\cos ^{ - 1}}(3/5)$$
C
$${\cos ^{ - 1}}(3/5) \pm \pi $$
D
$${\pi \over 3},\pi - {\cos ^{ - 1}}(3/5)$$
4
WB JEE 2010
MCQ (Single Correct Answer)
+1
-0.25

The value of $${{\sin 55^\circ - \cos 55^\circ } \over {\sin 10^\circ }}$$ is

A
$${1 \over {\sqrt 2 }}$$
B
2
C
1
D
$$\sqrt 2 $$
WB JEE Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12