Question

Find the missing part

Answer 1

Explanation:

Lookat the picture.

We have

`2a=15\to a=(15)/(2)\to a\sqrt3=(15\sqrt3)/(2)`

small triangle:

`x=2a=(15)/(2)\to a=(15)/(4)\to y=(15\sqrt3)/(4)`

`a+b=15\to b=15-(15)/(4)=(60)/(4)-(15)/(4)=(45)/(4)`

`a=(15)/(4)\\\\b=(45)/(4)\\\\x=(15)/(2)\\\\y=(15\sqrt3)/(4)\\\\z=(15\sqrt3)/(2)`