Answer:
70.5°
Step-by-step explanation:
22² = (20)²+(18)² - 2(20)(18) cos X
484 = 400 + 324 - 720 cos X
-240 = -720 cosx
1/3 = cos X
= X
X = 70.52877937
Answer: 
<u>Step-by-step explanation:</u>

Answer:
22
Step-by-step explanation:
Answer:
900-1200
Step-by-step explanation:
mutpliy by 60