Given that secb=csc0.64 and that b lies in the first quadrant, use a cofunction identity to measure angle b,to two decimal places. I dont know how to solve it. Please any hints?
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Use the identity $\displaystyle \sec(b) = \csc(\frac{\pi}{2} - b)$.
ok so I did this since csc=0.64 secb=0.64(pi/2-b) =1.0053-b im stuck! help!
$\displaystyle \csc(0.64) = \csc(\frac{\pi}{2} - b)$ Hence, $\displaystyle \frac{\pi}{2} - b = 0.64$ Solve for b!
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