Question

In triangle ABC , BC = 8 cm and angle C= 30 degree, then find the value of AC- AB?​

Answer 1

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

in triangle we have to do add all three sides