Question

in triangle ABC, of angle B = 90° ,AB= 5cm and angle ACB= 30° then determine all trigonometry ratios

Answer 1

Angle acb is 30°
So cos 30°=side adj. /hypotenuse
Cos 30°=√3/2
So BC=√3 & ac=2
Now you can find all trigonometric ratios

Answer 2

hi there.....
urjaa here!!!!

ABC=180°
B=90°
C=30°
So,A=180-(90+30)=180-120=60
A=60°

hope it helps you!!!!
urjaa......