Use the rule of 3 simple
x mean 100%
3 mean 15%
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x = 3*100/15 = 300/15 = 20
hope this will help you
The correct answer that i came up with is D
the airplane new altitude is 17500
20000-2500=17500
298* falls in quadrant 4 is 0* is the positive x-axis. In quadrant 4, cos is positive. Therefore, we simply need to calculate the acute angle,x, that correlates to 298*.
360 = 298 + x
62 = x
Therefore, we have :
cos(298*) = cos(62)
In case you need to know :
sin(298*) = - sin (62)
tan(298*) = - tan (62)
Since both sin and tan are negative in the fourth quadrant.
