Rewrite 2sin2x + 3 cos x − 3 in terms of cos x
1 answer:
9514 1404 393
Answer:
-2cos²(x) +3cos(x) -1
Step-by-step explanation:
Use the "Pythagorean identity" to replace sin²(x).
sin²(x) +cos²(x) = 1
Then ...
2sin²(x) +3cos(x) -3 = 2(1 -cos²(x)) +3cos(x) -3
= -2cos²(x) +3cos(x) -1
You might be interested in
27% of 200
= 0.27 x 200
= 54
Answer
27% of 200 = 54
Answer:
10:55
Step-by-step explanation:
9:15/10:05/10:55
Answer:
m1=43
Step-by-step explanation:
78-35=43
Answer:
0,2
Step-by-step explanation
Answer:
900
Step-by-step explanation
That would be 3 * 300 = 900
