Question

In fig 10.12,find sin A, tan A and cot A​

Answer 1

given hypotenuse =25 cm

adjacent side =20 cm

by pythagoras therom (hyp)2=(adj)2+(opp)2

(25)2= (20)2 + (opp)2

625=400+ opp2

225=opp2

opp= 15.

sina = opp/hyp

sina = 15/25

sina= 3/5

tana =opp/adj

tana =15/20

tana=3/4

tana=1/cota

cota =4/3