Question

if a=60degree then the value of sin2a will be​

Answer 1

Answer:

2a=2*60=120 hope this helps you bro

Answer 2

Answer:

The value of sin(2a) = √3/2.

Explanation:

Given that, the value of a = 60°

To find,

The value of sin(2a)

Calculation,

Method 1

We can directly plug in the value of a = 60° in the given trigonometric function.

i.e. sin(2×60°) = sin(120°) = sin(90° + 30°) = +cos(30°) = √3/2

Therefore, the value of sin(2a) = √3/2.

Method 2:

We know that sin(2a) =  2sin(a)cos(a)

⇒Sin(120) = 2sin(60)cos(60)

⇒ sin(120) = 2 × (√3/2) × (1/2)

⇒ sin(120) = √3/2.

Therefore, the value of sin(2a) = √3/2.

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