Solve this?
If sin^(-1)(x-x^2/x+x^3/4.....)+cos^(-1)(x^2-x^4/2+x^6/4.....)=pi/2 for 0<x<sqrt2 then x equals
a. 1
b. 1/2
c. 0
d.-1
If
1 Answer
Mar 20, 2018
Explanation:
You have:
Thus, we can say,
[because
From the equation, we understand:
These can be possible only when
Thus, as