Question

If 5 sin a=4 then find the value of cos a

Answer 1

Answer:

cos a= 3/5

Step-by-step explanation:

5 sina  = 4

sina = 4/5

if you take it in the a triangle which hyp. = 5  base =3 and atitude with 4 cm

then sina = height / hyp.

sina =4/5

sim. cos a = 3/5

regards