Question

if the length of right angle triangle hypotense 10 and side AB is 5 and angle B is 90 and find the angle A​

Answer 1

Step-by-step explanation:

the side opposite to 30° is 1/2 the hypotenuse , therefore , AB is 1/2 the length of ac , 30° -60° -90° thm.

,by angle addition property, the sum of all angles in a triangle is 180, considering /_A =x ,

angle A + angle C + angle B = 180 , therefore ,

angle A = 180-30-90 ,

= 180- 120

= 60° therefore angle a =60°