Question

In triangle ABC, AB=AC=15 cm and BC=18 cm. Find (i) cosB (iii) sinC (iii) tan square B - sec square B + 2

Answer 1

Construct the triangle given and make a median in between parting the triangle.if bc is 18 cm , those two parts are 9cm . Then on solving u wil get no.i. b/h so 9/15 which is 3/5(ans) . Like wise solve the rest .