Questions
The value of x for which is
a
12
b
1
c
0
d
-12
detailed solution
Correct option is D
We have, sin (cot–1 (x + 1)) = cos(tan–1 x)⇒cosπ2−cot−1(x+1)=costan−1x⇒π2−cot−1(x+1)=2nπ±tan−1xPut n=0⇒π2−cot−1(x+1)=±tan−1x=tan−1(±x)⇒π2=tan−1(+x)+cot−1(x+1)⇒x+1=±x⇒2x+1=0∴x=−12Talk to our academic expert!
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If then equals
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