Answer:

Step-by-step explanation:
Given: 

Theta lie in first quadrant.
Multiply both sides by 2

2theta lie in I and II quadrant.
is positive in I and negative in II quadrant.







Hence, The value of 
Answer: D, neither A nor B
Step-by-step explanation: In a function, the x (the input) cannot repeat in the given set of ordered pairs. In Set A, 2 repeats in the third and fourth ordered pairs. In Set B, 9 repeats in the third and fourth ordered pairs as well.
Answer:
the correct anser is B
Step-by-step explanation:
Calculate the area of the shape on all the corners