Question

Assume that sin(A)=sin(B) in the figure. Find exact answers for each of the values below, not decimal approximations. All angles are given in radians, and your answers should be in radians.

If A=1.2, then B=

Answer 1

Is there a picture somewhere?

Answer 2

yes one sec

Answer 3

@Mertsj

Answer 4

That is the graph of y = sin(x). This graph contains the points, (0,0) (pi/2,1) (pi,0)
So we see that the point B must be pi/8 units less that pi or 7pi/8

Answer 5

If A = 1.2, then B = 3.14-1.2

Answer 6

use \[\pi-1.2\]

Answer 7

since it doesn't want approximations

Answer 8

ohh okay yeah that was the problem. thank you @Mertsj @Zarkon @Loser66

Answer 9

ha!! finally, I know the reason why it is wrong.