Answer:
0.2
Step-by-step explanation:
Basically, all you would do is 120/540. Which is the same thing as division. So: 120 / 540 = 0.2
(8x + 7) - (2x - 3)
(8x + 7) + (-2x + 3)
combine like terms
8x - 2x and 7 + 3
6x + 10
Consider this option:
1) if the angle belongs to IV quadrant, it means cos is in [0;1];
2)
![cos \alpha= \sqrt{1-sin^2 \alpha}](https://tex.z-dn.net/?f=cos%20%5Calpha%3D%20%5Csqrt%7B1-sin%5E2%20%5Calpha%7D%20)
using this formula cosθ=√(5/9) ⇒ cosθ=√5/3