Thursday

January 29, 2015

January 29, 2015

Posted by **Anonymous** on Monday, May 2, 2011 at 4:07pm.

- Calculus/Vectors -
**Reiny**, Monday, May 2, 2011 at 4:30pmmake a sketch with O the origin

OP = 480 and south along the y-axis.

draw OR as the resultant of length 528 and angle POR = 15°

Complete the parallogram with OQ =PR and QR = OP

by cosine law:

PR^2 = 480^2 + 528^2 + 2(480)(528)cos15°

PR = 139.9125

So the wind speed is 139.9 km/h

- Calculus/Vectors -
**Anonymous**, Tuesday, May 3, 2011 at 8:59amso by using that formula for cosine i somehow still can't get the right answer :(

**Answer this Question**

**Related Questions**

Physics - You are traveling on an airplane. The velocity of the plane with ...

physics - You are traveling on an airplane. The velocity of the plane with ...

physics - You are on an airplane traveling 30° south of due west at 130.0 m/s ...

physics - An airplane flies due south at 185 km/h relative to the air. There is ...

Physics - An airplane flies due south at 185 km/h relative to the air. There is ...

PHYYYYYSICS 4 - A plane points its nose due north and flies at a speed of 71 m/s...

Physics - A cessna plane flies with a speed of 150km/h relative to the air and ...

Physics - An airplane flies due north at 160 km/h with respect to the air. There...

Physics - An airplane flies due north at 145 km/h with respect to the air. There...

Calculus 3 - Vectors The thrust of an airplane's engine produces a speed of 400 ...