Question

If 3SinA=4CosA , find 4Sin²A-3Cos²A+2 = ?​

Answer 1

$\huge\underline\orange{Answer}:-$

$\underline\mathtt\blue{since\: 3cosA=4sinA, }$

$\underline\mathtt\blue{then\: tanA=3/4,}$

$\underline\mathtt\blue{then\: sinA=3/5,}$

$\underline\mathtt\blue{cosA=4/5,}$

$\underline\mathtt\blue{therefore,}$

$\underline\mathtt\blue{4cos A-3sin A+2,}$

$\underline\mathtt\blue{ 4x(4/5)-3(3/5) +2,}$

$\underline\mathtt\blue{4x16/25 - 3x9/25 +2,}$

$\underline\mathtt\blue{64/25 - 27/25 + 2,}$

$\underline\mathtt\blue{(64-27+50)/25,}$

$\underline\mathtt\blue{=87/25 }$

Answer 2

Ooi Sam ❤️

Tum. Mujhe block kyun kiya pint pe? T_T

Please unblock Kar do mere jaan, next time se nhi karunga dubara mistake.

Please

Pint = SamKrajManna