Answer:
cosx = sqrt(15)/4, -sqrt(15)/4
Step-by-step explanation:
cos²x = 1 - sin²sin x
cos²x = 1 - (1/4)²
cos²x = 15/16
cosx = sqrt(15)/4, -sqrt(15)/4
For the volume you have to cube (hence the name) the edge length:
(2.7)³ = 19.683 cm³
It is 3y^3 bc u take all the matching letters and add them up together
1,000 yes 25% of 4000 is 1000
