Question

One angle in a right triangle measures 15 degrees.what is the measure of the other acute angle in this triangle?

A)65 degrees
B)75degrees
C)105degrees

Answer 1

angles add up to 180
if right triangle, one angle is 90
another is 15 as given therefor
180=15+90+x
180=105+x
subtract 105
75=x

angle is 75 degrees

answer s B

Answer 2

because all triangles angles add up to equal 180, and a right triangle has a 90 degree angle. you subtract 90 and 15 from 180 and that number will be the size of the remaining angle

180-90=90

90-15= 75

the answer is B) 75degrees