Answer:
66
Step-by-step explanation:
7 x + 3 = 7 (12) + 3 (-6)
84 - 18 = 66
Substitute the value of the variable into the expression and simplify.
The answer is c bc I just know
Answer:
Doesn't make sense.
Step-by-step explanation:
-1 ≤ cosθ ≤ 1
=> cosθ = 3√3 doesn't make sense.