1
MHT CET 2021 24th September Morning Shift
MCQ (Single Correct Answer)
+2
-0

If $$a \sin \theta=b \cos \theta$$, where $$a, b \neq 0$$, then $$a\cos 2 \theta+b \sin 2 \theta=$$

A
$$\mathrm{ab}$$
B
a
C
b
D
$$\frac{a}{b}$$
2
MHT CET 2021 23rd September Evening Shift
MCQ (Single Correct Answer)
+2
-0

If $$\sin (y+z-x), \sin (z+x-y)$$ and $$\sin (x+y-z)$$ are in AP, then

A
$$\tan y=\tan x+\tan z$$
B
$$\tan y=\tan x-\tan z$$
C
$$2 \tan y=\tan x+\tan z$$
D
$$2 \tan y=\tan x-\tan z$$
3
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+2
-0

If $$2 \cos \theta=x+\frac{1}{x}$$, then $$2 \cos 3 \theta=$$

A
$$x^3-\frac{1}{x^3}$$
B
$$\left(x+\frac{1}{x}\right)^3$$
C
$$x+\frac{1}{x}$$
D
$$x^3+\frac{1}{x^3}$$
4
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+2
-0

$$\tan 3 \mathrm{~A} \cdot \tan 2 \mathrm{~A} \cdot \tan \mathrm{A}=$$

A
$$\tan 3 \mathrm{~A}+\tan 2 \mathrm{~A}-\tan \mathrm{A}$$
B
$$\tan 3 \mathrm{~A}-\tan 2 \mathrm{~A}-\tan \mathrm{A}$$
C
$$\tan 3 \mathrm{~A}+\operatorname{tan} 2 \mathrm{A}+\tan \mathrm{A}$$
D
$$\tan 3 \mathrm{~A}-\tan 2 \mathrm{~A}+\tan \mathrm{A}$$
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