Addition, subtraction, multiplication or division? limited time

Use the graph of the sine function y=2sinθ shown below

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.