Practicing Success
If sec $ A = \frac{17}{8}$, given that A < 90o, what us the value of the following? $\frac{34sinA +15cotA}{68cosA-16tanA}$ |
23 19 30 38 |
19 |
secA = \(\frac{17}{8}\) By using pythagoras theorem , P2 + B2 = H2 P2 + 82 = 172 P = 15 34sinA + 15cotA = 34 ( \(\frac{15}{17}\) ) + 15 ( \(\frac{8}{15}\) ) = 30 + 8 = 38 68cosA - 16 tanA = 68 ( \(\frac{8}{17}\) ) - 16 ( \(\frac{15}{8}\) = 32 - 30 = 2 Now , $\frac{34sinA +15cotA}{68cosA-16tanA}$ By putting values of numerator of denominator = \(\frac{38}{2}\) = 19 |