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September 21, 2014

September 21, 2014

Posted by **Halala** on Tuesday, February 26, 2013 at 7:04am.

- Pre calculus, vectors -
**Henry**, Wednesday, February 27, 2013 at 9:09pmVb = 20km @ 70o + 20km @ 0o.

Vb = X + Yi.

Vb = (20*cos70*20) + (20*sin70)i

Vb = 26.84 + 18.79i

tanA = Y/X = 18.79/26.84 = 0.70022

A = 35o = Direction.

Vb = X/cosA = 26.84/cos35 = 32.8 km/h =

Velocity of the boat.

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