Bryan W.

Junior in the Watson School of Engineering

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Trigonometry

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Question:

An Airplane is 4000 feet from you and 30000 feet in the air above you. What is the angle of elevation between you and the plane?

Bryan W.

Answer:

tanx = opp/adj tanx = 30000/4000 tan^-1(30000/4000) = x x = 82.4 degrees

Calculus

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Question:

Elon Musk leaves his house in his new Model 3 Tesla at t=0 at a velocity of v = 5 + 4t. Find his acceleration at t = 3.

Bryan W.

Answer:

Integral of Velocity is Acceleration a=5t+2t^2+C make definite integral from 0-3 Solve 15+18-0 a = 33

Algebra

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Question:

2x^2 + 4x+6 = x^2+2

Bryan W.

Answer:

Subtract like terms and set to 0 x^2 +4x+4=0 Foil (x+2)(x+2)=0 set factors =0 x = -2

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