The measure of one acute angle in a right triangle is 40°. What is the measure of the other acute angle in the triangle?

1 Answer
Suren Abreu
Apr 7, 2017

#50^o#

Explanation:

The sum of the measure of the internal angles of any triangle is #180^o#.

In a right angled triangle, one angle will be #90^o#.

Since we know the measure of one of the other acute (less than #90^o#) angles, we subtract the sum of the two known angles from #180# to calculate the measure of the other acute angle.

#180-(90+40)#

#180-130#

#50#

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