If $tan B =\frac{5}{3}$, what is the value of $\frac{cosec B + sin B}{cos B-sec B}$ ? |
$-\frac{177}{125}$ $-\frac{59}{15}$ $\frac{59}{15}$ $\frac{177}{125}$ |
$-\frac{177}{125}$ |
tanB = \(\frac{5}{4}\) = \(\frac{P}{B}\) Using pythagoras theorem , P2 + B2 = H2 52 + 32 = H2 H2 = 34 H = √34 Now , $\frac{cosec B + sin B}{cos B-sec B}$ = ( \(\frac{√34 }{5}\) + \(\frac{5 }{ √34}\) ) × ( \(\frac{3 }{√34}\) - \(\frac{√34 }{ 3}\) ) = ( \(\frac{34 +25 }{5√34}\) × ( \(\frac{9 - 34 }{3√34}\) = ( \(\frac{59 }{5\) × ( \(\frac{-25 }{3}\) = - \(\frac{177 }{125\) |