Question

Find the value of y

Answer 1

The answer is

`5 √(2)`

Explanation:

By using Pythagoras

Then

`{y}^(2) + {y}^(2) = {10}^(2) \\ 2 {y}^(2) = 100 \\ {y}^(2) = 50 \\ y = √(50) = √(2 * 25) = 5 √(2)`

Answer 2

Explanation:

`sin90/10=sin45/y\\ \\ y=10sin45\\ \\ y=5√(2)`