MATH ANALYSIS

posted by .

how do you find the function csc 225 degrees without using a calculator?

  • MATH ANALYSIS -

    It will have the same sign as 1/csc225 = sin 225, which is negative in the third quadrant.
    The absolute value is the same as that of reference angle to the 180 degree, -x axis, which is 45 degrees.

    csc 45 = 1/sin 45 = sqrt 2

    The value of csc 225 is therefore
    -sqrt2 = -1.414

  • MATH ANALYSIS -

    thank you drwls!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    how do I find the sin, cos, and tan of -60 degrees without using a calculator?
  2. MATH ANALYSIS

    how do i evaluate the function csc 11 pie/4 without using a calculator
  3. MATH ANALYSIS

    how do i evaluate the function csc 11 pie/4 without using a calculator
  4. Math

    Hi,I need to know how to do question like this without using a calculator. Can anyone help please. Which of the following is closest to square root of 4000 A)40 B) 60 C) 200 D) 2000 I know the answer is B , but I did it on the calculator. …
  5. maths

    evaluate without using a calculator, leaving your answer as surds (a)sin105 degrees (b)tan15 degrees (c)cos 75 degrees
  6. pre calc

    My teacher asked for the EXACT VALUES of sin(pi/6) cos(pi/4) csc(pi/3) I have to figure it out without a calculator?
  7. trig

    How do I get exact measures? cosine 270 degrees sin 90 degrees tan 360 degrees csc 45 degrees no calculator!
  8. trig

    How do you decide if csc=74 is greater than or less than cos=74 without using a calculator?
  9. Let f be the function be defined by f(x)=5^((2x^2)

    Let f be the function be defined by f(x)=5^((2x^2)-1)^(1/2) find the range of f without using a calculator
  10. Math

    Use a calculator to evaluate the trigonometric function. Round to four decimal places. Make sure that your calculator is in the correct angle mode. 1) csc 2pi/5 1.3213?

More Similar Questions