Sqrt(2) 2 1 q 45 30 sqrt(3) a - University of Washington

a b q 45o c 30o a a asqrt(2) 2 1 sqrt(3) cosθ = a c sinθ = b c tanθ = b a a 2+b = c2 ax2 +bx+c = 0 x = −b± √ b2 −4ac 2a g = 9.8m/s2 1mile/hour = 1.61km/hour = 0.447m/s 1inch = 2.54cm 1foot ≈ 30cm 1 Newton −meter = 1 Joule 1 Joule/second = 1 Watt 1 kWh = 3.6106 J 2500 Calories ≈ 3kWh ≈ 10MJ 2500 Calories per day ≈ 125Watts sin2θ = 2sinθ cosθ tanθ = sinθ cosθ sin2 θ ... ................
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