Question

Evaluate:3sin3A+2cos(5A+10°)/√3tan 3A - cosec(5A-20°) where A =80°

Answer 1

Answer: - 17.2254 ( Approx )

Step-by-step explanation:

Here, the given expression is,

$\frac{3 sin3A+2 cos(5A+10^{\circ})}{\sqrt{3}tan 3A - cosec(5A-20^{\circ})}$

By putting A = 80°,

We get,

$\frac{3 sin240^{\circ}+2 cos(410^{\circ})}{\sqrt{3}tan 240^{\circ} - cosec(380^{\circ})}$

= $\frac{3\times -0.86602540378+2\times 0.64278760968}{\sqrt{3}\times 1.73205080757 - 2.92380440016}$

= $-17.2254171473\approx -17.2254$

Answer 2

Answer:

Step-by-step explanation: