Answer:
x=4y/5 + 24/5
Step-by-step explanation:
Answer:
:)
Step-by-step explanation:
For simplicity I will substitue
for β.

In the first step I used the identity
And I factored out 
Then it's just simple algebra to cancel till the 3rd step where we used another identity derived from the Pythagorean Theorem.

That's it!
135 mg*1g/1000mg*10dg/1g=1.35 dg
Your answer is C
hope it helps