what is the measure of angle A if sin a= .42?
In Exercises 10–17, is an acute angle. Use a calculator to approximate the measure of . Round to one decimal place.
10.
sin A= .42
We can use the sine inverse to find this....so we have
asin(.42) = A = 24.83 degrees ....this could also be a 2nd quadrant angle = (180 - 24.83) degrees = about 155.17 degrees
