Question

Find the measure of the third angle of the triangle whose two angles are 45° and 60°.

Answer 1

Answer:

75°

Step-by-step explanation:

Let the other angle be "x"

therefore: 45+60+x =180(angle sum property of a triangle)

105 + x = 180

x = 180-105

x= 75°

Answer 2

Answer:

75°

Step-by-step explanation:

let y be the third angle

a+b+c=180°

45°+60°+c=180°

105+c=180°

c=180-105

c=75°

c=y

y=75°