Math, asked by chaudharyreena303, 2 months ago

7. If √3 tan = 3 sin, prove that (sin2 - cos2) = 1/3​

Answers

Answered by mayurikajuthu
1

Hello !

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√3 tan Ф = 3 sin Ф [ Given ]  

    tan Ф = √3 sin Ф

    tan Ф / sin Ф = √3

    sin Ф / cos Ф x sin Ф = √3  

    1/cos Ф =√3  

    cos Ф    = 1/√3

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sin² Ф - cos ² Ф

1 - cos² Ф - cos² Ф  

1 - 2 cos² Ф

 

1 - 2 x (1/√3)²

1 - (2 / 3 )

3 - 2 / 3

1/3 = RHS

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