Plz !

find "b"

i'll give brainliest

b = 45/4

Step-by-step explanation:

First we need to solve for x

sin 30 = opposite/ hypotenuse

sin 30 = x/15

15 sin 30 = x

15 (1/2) =x

15/2 =x

Then we can use

cos 60 = adjacent/ hypotenuse

cos 60 = a/x

Multiply by x

x cos 60 =a

15/2 (1/2) =a

15/4 =a

b = 15 -a

b = 15 - 15/4

b = 15*4/4 - 15/4

  = 60/4-15/4

  =  45/4

the correct answer to your question is a. 4^4

good luck my friend!

hope this !

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