1
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
What is the general solution of cos100 x - sin100 x = 1?
1
nπ 
2
(2n + 1)π 
3
2nπ
4
(2n + 1)π / 2
2
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
What is sin12° sin48° equal to? 
1
$\frac{\sqrt5-1}{4}$
2
$\frac{\sqrt5+1}{4}$
3
$\frac{\sqrt5-1}{8}$
4
$\frac{\sqrt5+1}{8}$
3
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
What is $\rm \frac{\cos 17^\circ-\sin 17^\circ}{\cos 17^\circ+\sin ^\circ}$ equal to
1
tan 34° 
2
cot 34° 
3
tan 62° 
4
cot 62° 
4
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language

Consider the following numbers : 

I. tan 22.5° 

II. cot 22.5° 

III. tan 22.5° - cot 22.5° 

How many of the above are irrational numbers?

1
None
2
Only one
3
Only two
4
All three
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