Please help me. It's literally math! Find the exact two values for this problem in radians.

see below

Step-by-step explanation:

given function:

Cosine - (In a right triangle, the ratio of the length of the adjacent side to the length of the hypotenuse.)

#1: Take the inverse cosine of both sides of the equation to extract from inside the cosine.

#2: Evaluate

#3: The cosine function is positive in the first and fourth quadrants. To find the second solution, subtract the reference angle from π to find the solution in the fourth quadrant.

#4: Simplify the equation above.

- Multiply by

- Subtract from

#5: Find the period.

- The period of the function can be calculated using .

- Replace with  in the formula for period.

#6: Solve the equation.

- The absolute value is the distance between a number and zero. The distance between and is .

- Divide by

The period of the function is so values will repeat every radians in both directions.

, for any integer

what is the graph

step-by-step explanation:

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!