A, -1, -1 is your answer
6(-1) - 2(-1) = -4
-6 + 2 = -4
Answer:

Step-by-step explanation:
Recall that since sine is an odd function:

Hence:

Therefore:

Answer:
48
Step-by-step explanation:
The sides of a square have the same lengths, so the diagonal and two sides form a 45-45-90 right triangle. In a 45-45-90 triangle, the hypotenuse has a length with is

longer than the legs.
Therefore, the sides of the square would be

.
Rationalize the fraction be multiplying the numerator and denominator by root 2.

The 14 and 2 will reduce to 7, and the answer is A.