Question

- 2 sine (2 e) = sino​

Answer 1

Answer:

Let E = sin (2 sin-1 0.8)

Put sin-1 0.8 = θ

⇒ sin 0.8 = θ

cos θ = √1 − sin2 θ

= √1 − 0.64 = √0.36 = 0.6

∴ E = sin (2θ) = 2 sin θ cos θ

= 2 x 0 .8 x 0 .6

= 0 .96