Question
A plane is flying at 240 mph heading North 60 degrees East. The wind is blowing at South 30 degrees East at 30 mph.
What is the largest and smallest angles?
What is the largest and smallest angles?
Answers
Vp = 240mi/h, N60E = 30deg CCW.
Vw = 30mi/h, S30E = 300deg. CCW.
Add all hor components of velocity; and
then add all ver. components.
X = hor = 240cos30 + 30cos300 =
207.8 + 15 = 222.8mi/h.
Y = ver = 240sin30 + 30sin300 =
120 - 26 = 94mi/h.
Now we have a single rt triangle with
X and Y representing the hor and ver
side, respectively.
tanA = Y/X = 94/222.8 = 0.4219,
A = 22.9deg.,CCW = N67.1E. = Bearing of
the plane.
The largest angle = 90deg.
The smallest angle = 22.9deg.,CCW.
Vw = 30mi/h, S30E = 300deg. CCW.
Add all hor components of velocity; and
then add all ver. components.
X = hor = 240cos30 + 30cos300 =
207.8 + 15 = 222.8mi/h.
Y = ver = 240sin30 + 30sin300 =
120 - 26 = 94mi/h.
Now we have a single rt triangle with
X and Y representing the hor and ver
side, respectively.
tanA = Y/X = 94/222.8 = 0.4219,
A = 22.9deg.,CCW = N67.1E. = Bearing of
the plane.
The largest angle = 90deg.
The smallest angle = 22.9deg.,CCW.
Related Questions
An airplane is flying with a heading of 60 degrees east of north at 450 mph. A wind is blowing at 3...
An airplane is heading north at an airspeed of 300km/ hr, but there is a wind blowing from the north...
An airplane is heading north at an airspeed of 500 km/hr, but there is a wind blowing from the north...
A plane wants to fly east. It is capable of flying at 250 m/s, yet a 50 m/s wind is blowing [SW]. Wh...