Asked by Michael
a clock has a diameter of 1 foot what is the angular size if viewed from a distance of 27 feet
Answers
Answered by
MathMate
(half)-angle from centre to circumference
= arctan(0.5'÷27')
= arctan(1÷54)
= 1.061° approx.
Full angle of clock
= 2*half-angle
= 2.12° (approx.)
= arctan(0.5'÷27')
= arctan(1÷54)
= 1.061° approx.
Full angle of clock
= 2*half-angle
= 2.12° (approx.)
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