Question

If cos B =4|5, find the value of sin B

Answer 1

GIVEN:- Cos B =4/5

R.T.P:- Find Sin B

1.Cos B = Adjcent/Hypotenuse.

2.Sin B = Opposite/Hypotenuse.

• Cos B = 4/5.
• Sin B = 3/5.
• (Hypotenuse) square = (opposite) square + (adjcent) square.
• (5) square = (opposite) square + (4) square
• 25-16 = 9
• Therefore Opposite side = 3.
• ▪︎ I hope this one is help you.