Question

In a right triangle ABC, angleB =90degree.find BC, ifAC=15m,angle CAB=30 degree

Answer 1

Answer: 7.5m

Step-by-step explanation:

Given: triangle abc,right angled at B

Angle CAB=30° AC =15 m

To find: bc

Now,in triangle ABC, let theta= angle CAB=30°

We know that sin theta= perpendicular/hypotenuse

Thus, sin 30° =BC/AC

=1/2=BC/15

=15=2BC

Thus BC=15/2 =7.5m

Answer 2

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