Question

How to find the values of x and y.

Answer 1

Use the trigonometric function:


`\sin30^o=(x)/(20)\\\\\sin30^o=(1)/(2)\\\\(x)/(20)=(1)/(2)\ \ \ |\cdot20\\\\x=10`


`\sin60^o=(y)/(20)\\\\\sin60^o=(\sqrt3)/(2)\\\\(y)/(20)=(\sqrt3)/(2)\ \ \ \ |\cdot20\\\\y=10\sqrt3`