1
MHT CET 2023 9th May Morning Shift
+2
-0

If $$\sin 18^{\circ}=\frac{\sqrt{5}-1}{4}$$, then $$\cos ^2 48^{\circ}-\sin ^2 12^{\circ}$$ has the value

A
$$\frac{-\sqrt{5}+1}{8}$$
B
$$\frac{\sqrt{5}-1}{8}$$
C
$$\frac{\sqrt{5}+1}{8}$$
D
$$\frac{-1-\sqrt{5}}{8}$$
2
MHT CET 2021 21th September Morning Shift
+2
-0

If $$\frac{\cos (A+B)}{\cos (A-B)}=\frac{\sin (C+D)}{\sin (C-D)}$$, then $$\tan A \tan B \tan C=$$

A
0
B
tan D
C
cot D
D
$$-$$ tan D
3
MHT CET 2021 20th September Evening Shift
+2
-0

If $$\cos x=\frac{25}{24}$$ and $$x$$ lięs in first quadrant, then $$\sin \frac{x}{2}+\cos \frac{x}{2}=$$

A
$$\frac{6}{5 \sqrt{2}}$$
B
$$\frac{8}{5 \sqrt{2}}$$
C
$$\frac{7}{5 \sqrt{2}}$$
D
$$\frac{1}{5 \sqrt{2}}$$
4
MHT CET 2021 20th September Morning Shift
+2
-0

The value of $$\sin 18^{\circ}$$ is

A
$$\frac{4}{\sqrt{5}-1}$$
B
$$\frac{\sqrt{5}-1}{4}$$
C
$$\frac{\sqrt{5}+1}{4}$$
D
$$\frac{4}{\sqrt{5}+1}$$
MHT CET Subjects
Physics
Mechanics
Optics
Electromagnetism
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
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