trig

Write the expression and evaluate. There is only one answer whIch should match the range of the inverse trig function.

Sec^-1(-2)

I got 2pi/3
could someone tell me if that is right? And if not, could someone please explain how to get the answer.

  1. 👍 0
  2. 👎 0
  3. 👁 168
  1. if the sec is -2 then the cos is -1/2

    that would be 180- 60 or pi - pi/3 = 2pi/3

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    Suppose that the functions r and s are defined for all real numbers x as follows. r(x)=2x-1 s(x)=6x write the expression for (r*s)(x) and (r-s)(x) and evaluate (r=s)(4)

    asked by Dot on December 14, 2019
  2. 6th grade

    write an expression for the area of this rectangle 20cm on the top 4cm on the right at the top and 8cm on the left.evaluate your expression to find the area.

    asked by mahogany on September 20, 2009
  3. MATH URGENT

    Write the calculator key sequence you would use to evaluate each expression. Then evaluate. A.) (1-3)^4/4 B.) (-2)^0+4*17^0 C.) 16-9 (2^3)+(-4)^2 Thank you and I pleeeeese explain how to do this

    asked by SPIKE on January 8, 2013
  4. Math

    During a track meet Kelly throws the shotput 51 feet, 50 feet,and 58 feet. Write an expression that represents the length of her average throw in feet. Evaluate the expression.

    asked by Valerie on August 27, 2015
  5. Math PIZZAZZZ

    how does a rodeo star get around?? well if you cant give me an answer can you help me. heres the instructions First Simplify the expression below. Then evaluate the expression for the given value or the variable. Find the

    asked by Anonymous on August 27, 2009
  1. math

    Evaluate the expression 6^-2 x 4^0. a)12 b)48 c)1/36 d)36 Write 3^2 x 3^-3 x 3^6 as a single exponent. a)3^4 b)3^5 c)3^11 d)27^5

    asked by victoria on October 22, 2013
  2. Simplify Practice.

    Write the difference 30 – (–12) as a sum, then simplify. Evaluate the following expression. Show all steps. 18 + 6m for m = 2

    asked by Anonymous on September 27, 2014
  3. math:order of operation

    TWO PART Ellen is playing a video game in which she captures butterflies. There are 3 butterflies onscreen, but the number of butterflies doubles every minute. After 4 minutes, she was able to capture 7 of the butterflies. A)LOOK

    asked by Kara on February 8, 2015
  4. Alegbra

    Use properties of exponents to simplify the given expression. First express the answer in exponential form. Then evaluate the expression. 3^2 3^3=

    asked by Tim on March 11, 2017
  5. algebra

    ^ = exponent **show work please A sheet of 67-pound paper has a thickness of 100^-1 inch. a. write and evaluate an expression for the total thickness of 5 sheets of 67-pound paper b. write and evaluate an expression for the total

    asked by SoccerStar on April 20, 2011
  6. Math

    You and six friends go to a movie. The tickets cost $7.50 each. You each buy a drink for $2.00 and a box of popcorn for $3.75. Write an expression that represents the total amount of money spent. Then evaluate the expression.

    asked by Anonymous on September 6, 2018

You can view more similar questions or ask a new question.