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AmTran_Bus
 2 years ago
Find exact answer...easy trig
AmTran_Bus
 2 years ago
Find exact answer...easy trig

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AmTran_Bus
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1351550575736:dw

AmTran_Bus
 2 years ago
Best ResponseYou've already chosen the best response.0If theta equals tan theta and that equals 3, find F(theta+pi)

AmTran_Bus
 2 years ago
Best ResponseYou've already chosen the best response.0@freewilly922 @swissgirl

AmTran_Bus
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1351550836023:dw

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.0not sure hoe theta can equal tan theta

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.0unless theta equals 0

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.0But cant see it when theta equals 3

AmTran_Bus
 2 years ago
Best ResponseYou've already chosen the best response.0Well, I think you can also read it as tan theta=3, and it wants you to find the exact value using the coord plane.

AmTran_Bus
 2 years ago
Best ResponseYou've already chosen the best response.0And something about when you add pi you go 180 degrees around the unit circle...

freewilly922
 2 years ago
Best ResponseYou've already chosen the best response.11) you know that the tangent is positive so if you start in quadrant 1 you know that the triangle that you draw the opposite side to the angle has to be 3 times that of the adjacent side. dw:1351551020275:dw adding pi or 180 degrees puts you in the 3rd quadrant where both sin and cos are both negative, so the negatives signs will cancel out. Therefore, tan(theta) = tan(theta+180) = 3

freewilly922
 2 years ago
Best ResponseYou've already chosen the best response.1Oh and pi(radians) = 180 degrees and yes I know it should be a 3 in the drawing

AmTran_Bus
 2 years ago
Best ResponseYou've already chosen the best response.0Tan= y/x ...do you use the value of x or y in this example?

freewilly922
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1351551191480:dw \[\tan{(\theta)} = \frac{\sin{(\theta})}{\cos{(\theta)}} \] when you go to the 3rd quadrant you go from a y/x to a (y)/(x) so you stay with y/x

freewilly922
 2 years ago
Best ResponseYou've already chosen the best response.1\[\frac{\sin{(\theta)}}{\cos{(\theta)}}=\frac{y}{r}\frac{r}{x}\]
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