Question

The value of cos^-1(1/2)+2sin^-1(1/2)is
​

Answer 1

Answer:

Step-by-step explanation:

cos−1(−12)+2sin−1(12)

We know, cos−1(−x)=π−cos−1(x)

∴cos−1(−12)+2sin−1(12)=π−cos−1(12)+2sin−1(12)  

=π−π3+2(π6)

=π−π3+π3

=π

∴cos−1(−12)+2sin−1(12)=π