Question

in a triangle ABC right angled at B if angle A = 30° and BC = 8cm find the remaining angles and sides​

Answer 1

Step-by-step explanation:

For any triangle,

The sum of all three angles is 180 degree.

In this example,

A = 90 degree and B = 30 degree.

So, C= 180 - 90 -30 = 60 degree.

AB is the opposite side for the angle C and AC is the opposite side for the angle B.Sin 30 = AC / BC as BC is the opposite for the angle 90 degree and it is hypotenuse.

AC => BC * sin 30 => 8 * 1/2 = 4 CMSin 60 = AB / BC as BC is the opposite for the angle 90 degree and it is hypotenuse.

AB => BC * sin 60 => 8 * 1.732 / 2 => 6.928 CM

Answer 2

Answer:

c= 60°

Step-by-step explanation:

by angle sum property

A+B+C= 180

90+30+c= 180

120+ c=180

c= 180-120

c=60°