WHAT IS THE FORMULA OF SIN2@ IN TERM OF COTA​

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WHAT IS THE FORMULA OF SIN2@ IN TERM OF COTA​

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Amara 4 weeks 2021-10-01T21:15:41+00:00 1 Answer 0 views 0

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    2021-10-01T21:17:33+00:00

    Sin2A in terms of A,if A is an given angle then 2A is known as multiple angles.

    We know that for two real numbers or angles A and B

    Sin(A+B)=SinA CosB +CosA SinB

    Now putting B=A on the both sides of above formula,we get

    Sin(A+A)=SinA CosA+ CosA SinA

    ———————————

    Sin2A=2SinA CosA

    ———————————-

    Note:-In the above formula we should note that the angle on R.H.S is half of the angle on L.H.S,therefore

    Sin60=2Sin30 Cos30

    The above formula is also known as double angle formula for Sin2A.

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