Question

One side of a parallelogram is $12$ cm and its area is $60$ $c{m}^2$. If the angle between the adjacent side is $80$${}^o$, find its other side.

• A. $5.077cm$
• B. $8cm$
• C. $6cm$
• D. $4cm$

Answer 1

The correct option is A $5.077cm$

Area$=ab\sin \theta$

$\Rightarrow b=\frac{60}{12\sin {80}^o}=5.077$.