1
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
In a $$\Delta$$ABC, if a = 2, b = 3 and $$\sin A = {2 \over 3}$$, then what is $$\angle$$B equal to?
A
$${\pi \over 4}$$
B
$${\pi \over 2}$$
C
$${\pi \over 3}$$
D
$${\pi \over 6}$$
2
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If the angles of a triangle ABC are in AP and b : c = $${\sqrt 3 }$$ : $${\sqrt 2 }$$, then what is the measure of angle A ?
A
30$$^\circ$$
B
45$$^\circ$$
C
60$$^\circ$$
D
75$$^\circ$$
3
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
If the angles of a triangle ABC are in the ratio 1 : 2 : 3, then the corresponding sides are in the ratio
A
1 : 2 : 3
B
3 : 2 : 1
C
1 : $$\sqrt 3 $$ : 2
D
1 : $$\sqrt 3 $$ : $$\sqrt 2 $$
4
NDA Mathematics 21 April 2024
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language

$ABC$ is a triangle such that angle $C = 60^{\circ}$, then what is $\frac{\cos A + \cos B}{\cos \left(\frac{A - B}{2}\right)}$ equal to?

A

2

B

$\sqrt{2}$

C

1

D

$\frac{1}{\sqrt{2}}$

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