Wednesday

November 26, 2014

November 26, 2014

Posted by **Jay** on Monday, November 28, 2011 at 11:53am.

- Geometry -
**Steve**, Monday, November 28, 2011 at 1:07pmDraw a diagram; it helps keep the trig functions straight.

Starting from (0,0) a walk of 2 mi at N40°E leaves him at

x = 2sin40° = 1.29

y = 2cos40° = 1.53

Now, a walk 3 mi due east leaves him at

(4.29,1.53)

The new bearing is an angle θ with tanθ = 4.29/1.53 = 2.80

so, the new location is 4.55 mi N70°E

- Geometry -
**Jay**, Monday, November 28, 2011 at 1:09pmthank you soo much :)

- Geometry -
**bella**, Sunday, March 31, 2013 at 3:24pmcan you show us the diagram and tell the reason why we have to use sin and cos

- Geometry -
**mike**, Sunday, March 31, 2013 at 3:53pmcan you tell us in the diagram which is x and which is y please

**Answer this Question**

**Related Questions**

maths - a hiker walk due east at 4km per hour and a second hiker starting from ...

maths - a hiker walk due east at 4km per hour and a second hiker starting from ...

physics - a woman walks 2 km due east and then walks 4 km in the direction 30 ...

Physics - Determine the magnitude and direction of the displacement if a man ...

Math - John walks 20km due east then turns 270 degrees anticlockwise and walks ...

trig - A hiker walks 900m east and 500m south .Find the bearing of the finishing...

Physics: Vectors - A hiker walks 10.0 km[NE], 5.0 km[W], and then 2.0 km[S] in 2...

math,bearing and distance - A man walks 100m due north and then 150m on a ...

physics - a student leaves home and walks 100 m in a northerly direction. he ...

physics - A person walks 27m east and then walks 31m at an angle 38° north of ...