Question

If cos A =3/5
then find the value of sin A -- cos A/
2 tan A​

Answer 1

Answer:

cos A=3/5 ,then sinA=4/5 sinA/cosA=tanA=4/5 .

sinA-cosA/2tanA=3/40

Answer 2

Answer:

cosA=adjacent/hypotenuse

adjacent =3x hypotenuse=5x

opposite=4x(Pythagoras theorem)

sin=4/5

cos=3/5

tan=4/3

4/5-3/5÷2(4/3)

1/5×6/8

6/40

3/20