Question

in triangle abc right angled at b a b is equal to 5 cm and angle ACB is equal to 30 degree determine the lengths of the sides bc and ac chapter introduction to trigonometry solve it fast​

Answer 1

Answer:

take tan theta In the triangle.

tan theta =opposite /adjacent

tan30 =5/BC

1/root3 =5/bc

side BC =5 root3

then use Pythagoras theorem to find AC

Ac square =bc square +AB square