1
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

$$\tan 2 \alpha \cdot \tan (30 Y-\alpha)+\tan 2 \alpha \cdot \tan (60 Y-\alpha)+\tan (60 \Upsilon-\alpha) \cdot \tan (30 \gamma-\alpha)$$ is equal to

A
$$\tan 3 \alpha$$
B
$$\tan ^2 2 \alpha-\tan ^2 60 \gamma$$
C
1
D
0
2
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $$\sin \alpha - \cos \alpha = m$$ and $$\sin 2\alpha = n - {m^2}$$, where $$ - \sqrt 2 \le m \le \sqrt 2 $$, then n is equal to

A
0
B
1
C
2
D
$$-$$2
3
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $$\sinh u=\tan \theta$$, then $$\cosh u$$ is equal to

A
$$-\sec \theta$$
B
$$\sec \theta$$
C
$$\sin \theta$$
D
$$\cot \theta$$
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