AP EAMCET · Maths · Inverse Trigonometric Functions
is equal to
- A
- B
- C
- D
Answer & Solution
Correct Answer
(D)
Step-by-step Solution
Detailed explanation
Given that: tan-1(-2)-tan-1(3) As we know that, tan-1(-x)=-tan-1x =-tan-1(2)-tan-1(3) =-(tan-1(2)+tan-1(3)) As we know that,tan-1(x)+tan-1(y) =π+tan-1(x+y1-xy) when xy>1 . =-π-tan-1(2+31-2×3) =-π-tan-1(-1) =-π+tan-11 =-3π4
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