We need to find m first.
m+n=12, n=5 (plug in n as 5)
m+5=12 (subtract both sides by 5)
m=7
m-n: we know that m is 7 and n is 5
7-5=2
The final answer is 2.
You just need to isolate it, hope this explains it
Multiply both sides by 5.
Answer: 9
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.
