The value of sin A-sin B-cos A-cos B-cos A-cos B-sin A-sin B is-

sin A sin Bcos A+cos B+cos A cos Bsin A+sin B 2cosA+B2·sinA B22cos(A+B2)cos(A B2)+2sin A+B2·sinC A22sin(A+B2)cos(A B2) tan(A B2)+( tan(A B2)) ...

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General Solution of Trigonometric Equation

The value of ...

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The value of $\frac{sin A - sin B}{cos A + cos B} + \frac{cos A - cos B}{sin A + sin B}$ is....

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\frac{sin A - sin B}{cos A + cos B} + \frac{cos A - cos B}{sin A + sin B} = 0

Simplify the expression:
$\frac{s i n A - s i n B}{c o s A + c o s B} + \frac{c o s A - c o s B}{s i n A + s i n B}$

{(\frac{c o s A + c o s B}{s i n A - s i n B})}^{2014} + {(\frac{s i n A + s i n B}{c o s A - c o s B})}^{2014} = . . . . . . . . . . .

{(\frac{cos A + cos B}{sin A - sin B})}^{n} + {(\frac{sin A + sin B}{cos A - cos B})}^{n}

sin a + sin b = - \frac{21}{65}, cos a + cos b = - \frac{27}{65} \Rightarrow cos (\frac{a - b}{2}) =

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