1
MHT CET 2023 12th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

If $$\tan \theta=\frac{\sin \alpha-\cos \alpha}{\sin \alpha+\cos \alpha}, 0 \leq \alpha \leq \frac{\pi}{2}$$, then the value of $$\cos 2 \theta$$ is

A
$$\cos 2 \alpha$$
B
$$\sin \alpha$$
C
$$\cos \alpha$$
D
$$\sin 2 \alpha$$
2
MHT CET 2023 12th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

The solution set of $$8 \cos ^2 \theta+14 \cos \theta+5=0$$, in the interval $$[0,2 \pi]$$, is

A
$$\left\{\frac{\pi}{3}, \frac{2 \pi}{3}\right\}$$
B
$$\left\{\frac{\pi}{3}, \frac{4 \pi}{3}\right\}$$
C
$$\left\{\frac{2 \pi}{3}, \frac{4 \pi}{3}\right\}$$
D
$$\left\{\frac{2 \pi}{3}, \frac{5 \pi}{3}\right\}$$
3
MHT CET 2023 12th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

A ladder 5 meters long rests against a vertical wall. If its top slides downwards at the rate of $$10 \mathrm{~cm} / \mathrm{s}$$, then the angle between the ladder and the floor is decreasing at the rate of ________ rad./s when it's lower end is $$4 \mathrm{~m}$$ away from the wall.

A
$$-0.1$$
B
$$-0.025$$
C
0.1
D
0.025
4
MHT CET 2023 12th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

If $$\frac{\mathrm{d} y}{\mathrm{~d} x}=y+3$$ and $$y(0)=2$$, then $$y(\log 2)=$$

A
5
B
7
C
13
D
$$-$$2
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