Answer:
8
Step-by-step explanation:
scince it has the lines that mean that it will always be positive.
Answer:
c obtuse angle
Step-by-step explanation:
The area is 150 feet^2. The dimensions are 10x15 feet.
_________x__________
| |
| |
| 10 ft | 10 ft
| |
<span>| ________x__________|</span>
20+2x=50 <--- the perimeter
30=2x
x= 15
Answer:
32.7°
Step-by-step explanation:
Use the formula for law of cosines, for this question we need so solve for angle B, so use...
b² = a² + c² - 2(a)(c)Cos B
We are given a, b, and c, so plug them in...
55² = 90² + 50² - 2(90)(50)Cos B
Now simplify...
3,025 = 8100 + 2500 - (9000)Cos B
-7,575 = -(9000)Cos B (subtract 8100 and 2500 from both sides)
0.841666667 = Cos B (divide both sides by -9000)
Cos^(-1) 0.841666667 = B (use cosine inverse function on calculator)
32.68346376° = B
32.7° = B
The number is multiplied by 3 every time
and next three terms are 1/324, 1/972 and 1/2916
good luck