In a right triangle ABC, where C is the right angle and c is the hypotenuse, if a = 11.2 and b = 7.6, what is the measure of angle A?

Question



Answer 1

Angle A = arctan (11.2/7.6) which you can look up in a trig table or on your scientific calculator.

In case you don't know the arctan function you read it as "the angle the tangent of which is ..." and sometimes you see it written as Sin^-1 or as atan.