Two birds sit at the top of two different trees. The distance between the first bird and a bird watcher on the ground is 29.7 feet. The distance between the bird watcher and the second bird is 42.1 feet.
What is the angle measure, or angle of depression, between this bird and the bird watcher?
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OpenStudy (anonymous):
OpenStudy (anonymous):
Any idea? @rishavraj @DDCamp
OpenStudy (welshfella):
sin x = 29.7 / 42.1
find x
OpenStudy (anonymous):
0.70546??
OpenStudy (anonymous):
@welshfella
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OpenStudy (welshfella):
tha'ts the value of the sine of angle x
now you need to find angle x
OpenStudy (welshfella):
use sin-1 or arcsin on your calculator
rishavraj (rishavraj):
u see u got 0.705...
which is approximately equal to sin 45 i.e 0.707......
OpenStudy (anonymous):
Ok so i think it is 45.1?
rishavraj (rishavraj):
wht 45.1 ?????
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OpenStudy (welshfella):
yea - i get 45 on my calculator
OpenStudy (anonymous):
45.1°
44.9°
54.8°
35.2°
because these are my answer choices
rishavraj (rishavraj):
44.9
OpenStudy (welshfella):
lets take another look
if you use 0.705463 it give 44.9
OpenStudy (anonymous):
ohhhh ok this makes more since now thanks guys!!
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