Question

HELP PLZZZZZ!!!!!!!!!!!!

Answer 1

Also 5 cm, as the angles given are 45* and 90*, therefore the other angle is also 45* as angles in a triangle add up to 180*. As sides opposite equal angles are equal, if AY = 5cm, so does BY

Answer 2

BY = 7.1 cm

Explanation:

Sin 45 =
`(opposite)/(hypotenuse)`

Where opposite = 5 cm, hypotenuse = BY

0.707 =
`(5)/(BY)`

BY = 5/0.707

BY = 7.1 cm