JEE MainMathematicsInverse Trigonometric FunctionsMCQ+4 / −1
The value of is equal to :
- A
- B
- C
- D
View written solutionFree
Correct answer: B
-
Let
We need to find
-
First compute .
Since we use
Therefore,
= \frac{\frac{6}{5}}{1-\frac{9}{25}} = \frac{\frac{6}{5}}{\frac{16}{25}} = \frac{6}{5}\cdot \frac{25}{16} = \frac{15}{8}.$$ -
Now compute .
Given Since lies in the principal range , and , we have in the first quadrant.
Hence
So,
-
Use the tangent addition formula:
Substitute the values:
-
Simplify the numerator:
Simplify the denominator:
-
Therefore,
-
Hence the correct option is which is Option B.
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