Answer:
x=πn, n∈Z
Step-by-step explanation:
if sin²2x=1-cos²2x, then
1-cos²2x-2cos2x+2=0; ⇒ cos²2x+2cos2x-3=0; ⇔ (cos2x+3)(cos2x-1)=0;

7.5 pi ft
Hope this helps! :)
Answer:
i think it is c or d
Step-by-step explanation:
Answer:
11 1/3
Step-by-step explanation:
we know the first term is -10, and the common difference is -2
-10
-10 - 2
-10 - 2 - 2
-10 - 2 - 2 - 2
-10 - 2 - 2 - 2 - 2
and so on.