Answer:
Step-by-step explanation:
hello :
cot x + 2cot x sin x = 0 0≤ x≤ 180
cotx(1+2sinx) =0 means : cotx=0 or 1+2sinx=0
1) cotx=0 so : cosx=0 and sinx ≠ 0 because cotx = cosx/sinx
when : 0≤ x≤ 180 : x=90°
2) 1+2sinx=0 means : sinx = -1/2
when : 0≤ x≤ 180 : no solutions because : sinx ≥ 0
conclusion : one solution : x=90°
Answer:
10
Step-by-step explanation:
First, you would subtract 100-70 to get 30
Then, you would do 30/3 to learn that you could still buy 10 packs of Oreos with the remaining money.
Answer:
x=63
Step-by-step explanation:
The two interior angles add up the the exterior angle, so 51+x+12=2x. From there, solve to get x=63. Hope this helped!
Just subtract the following number from the preceding one.
48- 3= 45
3- 45= -42.
Answer: 24
Step-by-step explanation:
6, 12, 18, 24
8, 16, 24
