Answer:
m<K = 90°
m<L = 39°
m<M = 51°
Step-by-step explanation:
This is z right triangle and thd angle of K is 90°
Since the sum of interior angles in a triangle is equal to 180° The sum of other two angles will be 90°
3x + 21 + 2x + 19 = 90 add like terms
5x + 40 = 90
5x = 50
x = 10
m<L is 2x + 19 ➡ 2×10 + 19 = 39°
m<M is 3x + 21 ➡ 3×10 + 21 = 51°
