Question

sinA =3/5 find sin2A​

Answer 1

Answer:

We have sin a = 3/5

cos a = sqrt (1 - (sin a)^2)

=> sqrt (1 - 9/25)

=> sqrt (16/25)

=> 4/5 or -4/5 based on the value of a

sin 2a = 2*sin a*cos a

=> 2*3/5*4/5

=> 24/25 or -24/25 base on the angle a

Answer 2

Answer:

1.2

Step-by-step explanation:

if a = 3/5...

2a will be 2 x a

and 2 x a= 2 x 3/5

= 1.2