An aircraft (at Z) is spotted by two observers (at X and Y) who are L = 1950 feet apart. As the airplane passes over the line joining them, each observer takes a
sighting of the angle of elevation to the plane, as indicated in the figure. If A = 45°,
and B = 40°, how high is the airplane?
h
B)
L
The elevation of the plane is approximately feet.
(Do not round until the final answer. Then round to two decimal places as needed.)

889.70 feets

Step-by-step explanation:

From the solution diagram attached :

C = 180 - (40 + 45) = 95°

According to the sine rule :

Sin95 / 1950 = Sin40 / b = Sin 45 / a

1950 sin40 / sin 95 = b = 1248.22 ft

1950 sin 45 / sin 95 = a = 1384.13 ft

Sin 40 = h / 1384.13

h = 1384.13 * sin 40

h = 889.70 feets

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation:

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13