Answer:
114.89 degrees
245.11 degrees
Step-by-step explanation:
cos is negative in the second and third quadrant ("pointing" on the x-axis to the left).
so, the first answer for the second quadrant is
114.89 degrees.
the answer for the third quadrant is then backwards the same angles from a full 360 degree rotation
360 - 114.89 = 245.11 degrees
neverminding the jumbled lingo, is simply asking for the equation of the tangent line at that point, it says all tangents, well, there's only one passing there.
we can simply get the derivative of f(x) and take it from there.

since now we know the slope when x = 3/2, then we can just plug that into its point-slope intercept form, along with the coordinates.

Answer:
x = 20
Step-by-step explanation:
From the Euclidean theorem x^2 = 16 × 25
x^2 = 400
x = 20