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vera_ewing
 one year ago
Math question
vera_ewing
 one year ago
Math question

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0if you do not have this memorized, do the same as before draw a triangle, find the missing side

just_one_last_goodbye
 one year ago
Best ResponseYou've already chosen the best response.0Would love to help but this type of problems are way above my knowledge xD good luck but you got pros that are helping c;' @satellite73 and @phi

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what you need is a good unit circle cheat sheet

phi
 one year ago
Best ResponseYou've already chosen the best response.0First step, identify the "line" that represents pi radians (or 180 degrees) ditto for 3pi/2 (270 degrees)

vera_ewing
 one year ago
Best ResponseYou've already chosen the best response.0Well I know tanθ = (sqrt)3 , so how do I find cosθ using the triangle?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0look in quadrant 3 to see where the second coordinate is \(\frac{\sqrt{3}}{2}\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you will see that the first coordinate is \(\frac{1}{2}\) , that is the cosine

vera_ewing
 one year ago
Best ResponseYou've already chosen the best response.0Wait wouldn't it be 1/2 not 1/2 ? Since it's in Quadrant 3?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you will also see that the angle is \(\frac{4\pi}{3}\) although you were not asked for that

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no you are below the x axis in quadrant 3, so the first coordinate is negative, as is the second

vera_ewing
 one year ago
Best ResponseYou've already chosen the best response.0Ohhh okay that makes so much more sense! Thank you :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0just like ordinary graph paper left is negative in the x, down is negative in the y

phi
 one year ago
Best ResponseYou've already chosen the best response.0always put in a triangle in the correct quadrant. label the hypotenuse length 1 if they give you the sin, that is the y value if they give you the cos, that is the x value use pythagoras to find the unknown side. or , memorize the angles (painful, but doable)
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