MEDAL!!!!
16. To approach the runway, a pilot of a small plane must begin a 15* descent starting from a height of 2,530 feet above the ground. To the nearest tenth of a mld,how many miles from the runway is the airplane at the start of this approach? The figure is not drawn to scale. A.0.5 mi B.1.8MI C. 1.9mi D. 9,775.2MI
well by alternate angles in parallel line you can say |dw:1421700222728:dw|
5280feet=1 mile
did you find an answer for x, it will be in feet. then divide it by 5280 to convert it to miles
the angles are 90 75 and 15
how do i find x
ok... so looking at the diagram I posted, which trig ratio would you use..?
hypotenuse/opposite
that's correct... so which ratio is equal to opposite/hypotenuse? sin, cos or tan
sin
great so you have \[\sin(15) = \frac{2530}{x}\] which means \[x = \frac{2530}{\sin(15)}\] you need to solve for x by completing the calculation then divide the answer by 5280, which will convert it to miles. hope it makes sense
2530/0.65028784
that's correct. when you get the answer, divide it by 5280 to get miles
okay its 0.73685319
no.... you are dividing by a decimal so the answer should be larger than 2530
so the answer is D?
no, the answer you have just calculated is in feet.. now divide the answer by 5280 to convert it to miles. round the answer to 1 decimal place
okay so 1.8
?
well I got 1.85136 so when you round it to 1 decimal place... what do you think the answer is
1.9
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