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correct on that one too
3. Max observes the zoo and the library from a helicopter flying at a height of 200 times square root of 3 feet above the ground, as shown below What is the distance between the zoo and the library? My answer: 400 feet
yep you got it
4. If the cos 30° = square root 3 over 2, then the sin 60° = _____. My answer: square root 3 over 2, because the angles are complementary.
yep sin(x) = cos(90 - x) where 0 <= x <= 90
correct, same reason as before
well you can reduce 6/10 to get 3/5
Two birds sit at the top of two different trees. The distance between the first bird and a bird-watcher on the ground is 14.1 feet. The distance between the bird-watcher and the second bird is 27.9 feet. What is the angle measure, or angle of depression, between this bird and the bird-watcher? My answer: 30.4
soh cah toa - sin soa - opposite / adajenct enjoy:)
30.356338108109 degrees which rounds to 30.4 degrees (assuming you are going for the nearest tenth). So you got it
@jim_thompson5910 I only have a few more to be checked :)
yeah then you use a calculator to compute 9/(sin(60)) make sure you're in degree mode
hint: tan(45) = a/b sin(45) = a/c cos(45) = b/c
Okay one second :)
I'm not positive, but I think it's b/cos45
either that or c = a/sin(45)
My choices are b/tan45 b/cos45 a cos 45 a tan 45
So I will go with b/cos45.
Two ropes, AD and BD, are tied to a peg on the ground at point D. The other ends of the ropes are tied to points A and B on a flagpole, as shown below: Angle ADC measures 60° and angle BDC measures 30°. What is the distance between the points A and B on the flagpole? My answer: 10 feet
I got a 100 :)