NEED ASAP! let f(x)=cos(2x). compute the exact value of the slope of the line passing through the points...

Question

through the points (π/8 , f (π/8)) and (π/6 , f (π/6)).

(π over 8, f (π over 8)) and (π over 6, f (π over 6))

simplify as much as possible.

Answer 1

f(π/8) = cos (2(π/8))

f(π/8) = cos π/4

f(π/8) = √2 / 2

f(π/6) = cos (2(π/6))

f(π/6) = cos π/3

f(π/6) = 1 / 2

Use the definition of slope for the two points

(π/8, √2 / 2) and (π/6, 1/2)