We have the triangle 30° - 60° - 90°.
The lenght of the sides are in proportion: 

That is basically splitting the sentence so that it’s easier for you to solve it. It’s basically the same thing
To see how they are related, let us solve the two equations.
FIRST EQUATION



SECOND EQUATION



Hence the solutions to the two equations are ADDITIVE INVERSE of each other.
C and D are your correct answers.
I hope this helps
Answer:
1/3
Step-by-step explanation: