If cosA=32, then tan3A=?
0
12
1
∞
Explanation for the correct option:
Step 1. Find the value of tan3A:
Given, cosA=32 …(1)
As we know,
cosπ6=32 …(2)
Step 2. Compare equation (1) and (2),
A=π6
∴tan3A=tan3π6=tanπ2=∞
Hence, Option ‘D’ is Correct.
If cos A = √32, then tan 3A =