Question

If cosa =3/5,then find the value of sina-cosa/2tana?

Answer 1

Answer:

cos a=3/5=b/h

b=3,h=5,p=√(5)²-(3)²=√25-9=√16=4

sin a=p/h=4/5

tan a=p/b=4/3

Then,

sin a - cos a/2tan a

(4/5-3/5)/2×4/3

(4-3/5)/8/3

(1/5)/(8/3)

1×3/5×8

3/40

Step-by-step explanation: