Answer:
The value of cosθ is
Step-by-step explanation:
It is given that an angle θ with the point (15, −8) on its terminating side.
Here x=adjacent side=15 units and y=opposite side =-8 units,
Using pythagoras theorem,
Cosine is defined as
Therefore the value of cosθ is .
Answer:
It would be 150 I believe.
Step-by-step explanation:
Hope this helps and good luck!
Answer:
Distance between the points (-3,1) and (1, -2),
Option C
Cos(2 arctan(4/3)) = cos(2 arccos(3/5)) = cos^2(arccos(3/5)) - sin^2(arccos(3/5)) = cos^2(arccos(3/5)) - sin^2(arcsin(4/5)) = (3/5)^2 - (4/5)^2 = 9/25 - 16/25 = -7/25.