The Answer is 21/50 which is = 0.42
Answer:
B=44°
Step-by-step explanation:
x+10+3x+x=180
5x= 180-10
x=34
B= 34+10
B=44°
I think it is 4 cause I love u
The answer is 78
Explanation:
65 / 5 = 13
(13 = 1/6)
13*6 = 78
Answer:
881.5 meters.
Step-by-step explanation:
The horizontal plane at the level of wai-kin's eyes divide the height of the cliff into two parts. Let the upper part be represented by x and the lower part be represented by y.
The height of the cliff = x + y
Applying the appropriate trigonometry functions.
To determine the value of x;
Tan θ = ![\frac{opposite}{adjacent}](https://tex.z-dn.net/?f=%5Cfrac%7Bopposite%7D%7Badjacent%7D)
Tan
= ![\frac{x}{490}](https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B490%7D)
⇒ x = 490 x Tan ![36^{o}](https://tex.z-dn.net/?f=36%5E%7Bo%7D)
= 490 x 0.7265
= 355.985
x = 356 meters
To determine the value of y;
Tan θ = ![\frac{opposite}{adjacent}](https://tex.z-dn.net/?f=%5Cfrac%7Bopposite%7D%7Badjacent%7D)
Tan
= ![\frac{y}{490}](https://tex.z-dn.net/?f=%5Cfrac%7By%7D%7B490%7D)
⇒ y = 490 x Tan ![47^{o}](https://tex.z-dn.net/?f=47%5E%7Bo%7D)
= 490 x 1.0724
= 525.476
y = 525.5 meters
Therefore,
The height of the cliff = x + y
= 355.985 + 525.476
= 881.461
The height of the cliff is 881.5 meters.