1
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $$\sin \theta=-\frac{3}{4}$$, then $$\sin 2 \theta=$$

A
$$\frac{3 \sqrt{7}}{8}$$
B
$$-\frac{3 \sqrt{7}}{8}$$
C
$$\frac{2 \sqrt{3}}{7}$$
D
$$-\frac{2 \sqrt{3}}{7}$$
2
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

$$\begin{aligned} & \frac{1}{\sin 1^{\circ} \sin 2^{\circ}}+\frac{1}{\sin 2^{\circ} \sin 3^{\circ}}+\ldots +\frac{1}{\sin 89^{\circ}+\sin 90^{\circ}}= \end{aligned}$$

A
$$\frac{\cos 1^{\circ}}{\sin 1^{\circ}}$$
B
$$\frac{\cos 1^{\circ}}{\sin ^2 1^{\circ}}$$
C
$$\frac{\sin 1^{\circ}}{\cos 1^{\circ}}$$
D
$$\frac{\sin ^2 1^{\circ}}{\cos 1^{\circ}}$$
3
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following trigonometric values are negative?

I. $$\sin \left(-292^{\circ}\right)$$

II. $$\tan \left(-190^{\circ}\right)$$

III. $$\cos \left(-207^{\circ}\right)$$

IV. $$\cot \left(-222^{\circ}\right)$$

A
II, III and IV
B
Only III
C
I and III
D
II and III
4
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

$$\sin ^2 \frac{2 \pi}{3}+\cos ^2 \frac{5 \pi}{6}-\tan ^2 \frac{3 \pi}{4}=$$

A
0
B
1/2
C
1
D
1/3
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