Saturday

October 25, 2014

October 25, 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.

**Answer this Question**

**Related Questions**

Maths - A straight river flows at a speed of 20km/h. A boater starts at the ...

Physics - A river is flowing 4.0 m/s to the east. A boater on the south shore ...

Physics - A river is flowing 4.0 m/s to the east. A boater on the south shore ...

Math: Calculus - Vectors - A boat travels at a speed of 5 m/s in still water. ...

Vectors - I hope that the diagram I have drawn for myself matches the one in ...

Physics - a boat crosses a 2 km wide river by starting out at the south shore ...

Physics - a boat crosses a 2 km wide river by starting out at the south shore ...

Physics - A river flows due east at 1.42 m/s. A boat crosses the river from the ...

physics - a river flows due east at 1.50 m/s. A boat crosses the river from the ...

Physics - A river flows due East at 0.979 m/s. A boat crosses the river from the...