Question

Find the value of cos-1 (1/2) + 2 sin-1 (1/2)​

Answer 1

Answer:

−0.98258500593908114

Step-by-step explanation:

cos(

2

1

​

)−1+2sin(

2

1

​

)−1

Evaluate trigonometric functions in the problem

0.999961923064171−1+2⋅0.00872653549837393−1

Subtract 1 from 0.999961923064171 to get −0.000038076935829.

−0.000038076935829+2×0.00872653549837393−1

Multiply 2 and 0.00872653549837393 to get 0.01745307099674786.

−0.000038076935829+0.01745307099674786−1

Add −0.000038076935829 and 0.01745307099674786 to get 0.01741499406091886.

0.01741499406091886−1

Subtract 1 from 0.01741499406091886 to get −0.98258500593908114.

−0.98258500593908114