Post a New Question

Algebra 2 help please

posted by .

Which represents the reference angle for 2pi/3?

A. 2pi/3
B. pi/3
C. pi/4
D. pi/6

  • Algebra 2 help please -

    the angle is in QII, so

    pi-(2pi/3) = pi/3

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. algebra

    i need someone to explain to me how i got this answer...i know the answer but i need an explanation to the problem... C=2pi(r) the answer is r=C/2pi...i need someone to explain it to me..thank you C = 2pi(r) Divide both sides by 2pi …
  2. math-PLEASE CHECK

    Find the surface area and volume of each of the following figures: d.Right circular cylinder v=pir^2h pi(3)(3)(6) pi(54) v=169.6 cubic cm sa=2pi r^2 + 2pi rh 2pi(3)(3)+2pi(3)(6) 2pi(9)+2pi(18) 56+113=169 Sa=169 square cm is this right?
  3. math

    The radius of a cylinder is 3x-2 cm. The height of the cylinder is x+3 cm. What is the surface area of the cylinder?
  4. Algebra

    2pi(x^2 + 4x + 4) + 2pi(x^2 + 7x + 10) How do I write this as a polynomial in standard form (by factoring out 2pi)?
  5. math

    Hello there, im doing an equation and its mind boggling me badly so i want to see if im doing something wrong or not. It goes like this: sinx - Squareroot of 3/2 > 0 x € [0,2pi) i start by moving the sqroot of 3.. so i have sinx …
  6. Trig help

    1. What is the period of the function? y = 4 cos pi x A. 1 B. 2 C. pi D. 2pi 2. Which represents the reference angle for 2pi/3?
  7. Calculus help??

    I'm not sure how to solve this and help would be great! d/dx [definite integral from 0 to x of (2pi*u) du] is: a. 0 b. 1/2pi sin x c. sin(2pi x) d. cos (2pi x) e. 2pi cos (2pi x) This is the fundamental theorem, right?
  8. Algebra 2

    A sound wave is modeled with the equation y= 1/4 cos2pi/3 theta. a. Find the period. Explain your method. b. Find the amplitude. Explain your method. c. What is the equation of the midline?
  9. Algebra2

    Find the values of the inverse function in radians. 1. sin^-1(0.65)?
  10. Algebra 2

    Find the values of the inverse function in radians. sin^-1(0.65) a. 0.71+2pi n and -0.71+2pi n b. 0.71+2pi n and -3.85+2pi n c. 0.86+2pi n and -0.86 +2pi n d. -0.61+2pi n and 2.54+2pi n 2. tan^-1(0.09) a.-0.09+2pi n b. no such angle …

More Similar Questions

Post a New Question