Question

Two opposite sides of a parallelogram have lengths of `3`. If one corner of the parallelogram has an angle of `pi/12` and the parallelogram's area is `15`, how long are the other two sides?

Answer 1

`=1.3`

Explanation:

Area of Parallelogram `=15=ab sintheta` where `a=3` and `b=?` and `theta=(pi)/12`
or
`15=3timesbtimessin((pi)/12)`
or

`b=15/3times(0.2588)`

or

`b=5times(0.2588)`

or

`b=1.3`