Question

In triangle ABC , AB=AC=15cm and BC=18 cm, find cos

Answer 1

Answer:

3/5

Step-by-step explanation:

in the isosceles triangle ABC

AB is equal to AC is 15cm

BC is 18cm

1. the perpendicular drawn from angle A to the side BC divides the side BC into two equal parts BD is equal to DC is 9cm
2. cos angle ABC
3. BASE/HYPOTENSE
4. BD/AB
5. 9/15
6. 3/5