Answer:
The answer is a. cos2x - sin2x - sin x. Use the rule: cos2x = (cos^2)x - (sin^2)x. So, substitute cos2x in the expression: cos2x - sinx = ((cos^2)x - (sin^2)x) - sinx = (cos^2)x - (sin^2)x - sinx. Therefore, choice a. is correct choice.
I would have to say that the length of AC is 22.5
Step-by-step explanation:
inding the volume of a cylinder is the exact same formula! ... This cylinder has a radius of 4 cm and a height of 10 cm.
Try D. I am not exactly sure but let's hope it works.
