Question

Please walk me step by step through this

http://awesomescreenshot.com/0072e29o6f

Answer 1

45-90-45
(√2/2)-(1)-(√2/2)

a)
√2/2=5
1 =?

1•5/(√2/2)=5√2 =y

b) 1 =5
√2/2=?
(5•√2/2)/1=(5√2)/2=y

Answer 2

i mean "x" for question b

Answer 3

I'll brb