Well the order is pemdas
parenthasees, exponents, mutiplication or divistion whicher comes first left to right, then addtion and subtract whicherver comes first from left to right
so fractions are technically division, so just first simplify them, then do whaterver you want exg
1/2 times 4/8
first simpligy
1/2 times 1/2
multiply
1/2 times 1/2=1/4
Angle of elevation is angle measured from horizontal line to line of sight, The distance from the plane to the observer is 25,636 feet approx
<h3>What is angle of elevation?</h3>
You look straight parallel to ground. But when you have to watch something high, then you take your sight up by moving your head up. The angle from horizontal line to the point where you stopped your head is called angle of elevation. See the figure where angle OPD is the angle when observer saw the plane. It is measured from the horizontal line OD.
Refer to the attached figure.
It is given that we have
Length of PD = |PD| = 21,000 feet
Angle ∠OPD = 55°
Assuming length of OP = |OP| = x feet, we get the sin ratio as

(tan 55° was calculated from online calculator)
Thus,
The distance from the plane to the observer is 25,636 feet approx.
Learn more about trigonometric ratios here:
brainly.com/question/22599614
I'm pretty sure it C since line L and line M are parallel
Answer:
ha ha ha... yesno
Step-by-step wrong explanation:
becoause it is the dilemma of the miniyamma
Answer:
I think it's B I hope this is the right answer.