1
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 : $$\sqrt 3 $$ : $$\sqrt 2 $$
2
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
In a triangle ABC $\rm \frac{a}{\cos A}=\frac{b}{\cos B}=\frac{c}{\cos C}$ What is the area of the triangle if a = 6 cm?
1
9√3 square cm 
2
12 square cm 
3
18√3 square cm 
4
24 square cm 
3
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language

In a triangle ABC, ∠A = 75° and ∠B = 45°. What is 2a - b equal to?

1
c
2
√2c
3
2c
4
2√2c
4
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
In a triangle ABC tan A + tan B + tan C = k  What is the value of cot A cot B cot C? 
1
0.5 k
2
1/k
3
3/k
4
1/k3
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