Question

if sina=4/5 ,find the value of tan2a

Answer 1

Answer:

Theriayls hooo paa48 ÷ 3 =56789×3 thank u

Answer 2

Answer:

16/9

Step-by-step explanation:

sinA=4/5

height=4cm

hypotenuse=5cm

hypotenuse^2=base^2+height^2 (pythagoras theorem)

5^2=base^2+4^2

base^2=25-16

base^2=9

base=3cm

tanA=height/base

tan^2A=4^2/3^2

tan^2A=16/9