# How do you calculate the #sin ^ -1 (.6075) #?

##### 1 Answer

Nov 29, 2015

#### Explanation:

Since

#sintheta=(0.6075)#

#theta=sin^-1(0.6075)#

#theta~~37.41^@#

However, since the CAST rule states that sine is positive in quadrants

To find the other angle, we do

#180^@-37.41^@#

#~~142.59^@#