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January 31, 2015

January 31, 2015

Posted by **meme** on Sunday, February 19, 2012 at 12:16pm.

- MATH -
**Steve**, Sunday, February 19, 2012 at 12:41pmFYI: angle, standard

hypotenuse h = √(3^2+4^2) = √25 = 5

sinθ = y/h = -4/5

cosθ = x/h = -3/5

sin^2θ + cos^2θ = (-3/5)^2 + (-4/5)^2 = 9/25 + 16/25 = 25/25 = 1

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