Physics CH 0: General Introduction (20 of 20) Basic Trig for Physics - The Triangle (Tangent)

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In this video I find the angle (with respect to the horizontal) of a force.

First video in the series can be seen at:
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Do I have to worry about significant values in angles and trig ratios? If so how do I deal with that?

manasmahanand
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Just came across this channel! Will be very helpfull for my upcoming university semester!

shawnjassal
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PH3A: In regards to significant figures, would 38.7 be an acceptable answer then? Or would we have to round up to 40 degrees (since 80 and 100 both have one significant figure).

sophiasoriano
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Good afternoon Professor, Phys 2A student here. How did you get 38.7 degrees at 2:38? When I plug it into my calculator, I get .6747... I hit tan -1 (80/100) on my calculator.

diegoascencio
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Sir could you please recommend some physics books to study from

DieuDeShinobi