# Find the lengths a, b, c, and d in the following f...

Find the lengths a, b, c, and d in the following figure:

| <-----------------2cm-----------------------|<------d-------|

Leave your answers in terms of trigonometric functions.

| <-----------------2cm-----------------------|<------d-------|

Leave your answers in terms of trigonometric functions.

## Answers ( 1 )

,so

For QR, first find its opposite angle to be .

Now using the law of sines:

,thus .

Therefore: