Trigonometric Identities Question 292
Question: If $ \cos A=\frac{\sqrt{3}}{2}, $ then $ \tan 3A= $
Options:
A) $ 0 $
B) $ 1/2 $
C) $ 1 $
D) $ \infty $
Show Answer
Answer:
Correct Answer: D
Solution:
We have $ \cos A=\frac{\sqrt{3}}{2}\Rightarrow A=30^{o} $
Þ $ \tan 3A=\tan 90^{o}=\infty $ .