trig
posted by Charles .
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.

if the sec is 2 then the cos is 1/2
that would be 180 60 or pi  pi/3 = 2pi/3
Respond to this Question
Similar Questions

Evaluationrepost
Reposting because it has gone down to the second page! Evaluate 1. sin(tan inverse sqrt(x^22x)) 2. tan (sec inverse 3y) For 1. draw a right triangle and label the opposite leg sqrt(x^22x), the adjacent side 1 and the hypotenuse x1. … 
math
Evaluate. 1. sin^1(1/2) 2. cos^1[(root 3)/2] 3. arctan[(root3)/3] 4. cos(arccos2/3) 5. arcsin(sin 2pi) 6. sin(arccos 1) I got these values as my answers: 1. pi/6 2. 5pi/6 3. pi/6 4. 2/3 5. 2pi 6. 0 Can someone please tell me if … 
trig 26
simplify to a constant or trig func. 1. sec ²utan ²u/cos ²v+sin ²v change expression to only sines and cosines. then to a basic trig function. 2. sin(theta)  tan(theta)*cos(theta)+ cos(pi/2  theta) 3. (sec y  tan y)(sec y + … 
Trigonometry
Usa a right triangle to write each expression as an algebraic expression. Assume the referenced angle is theta, and x is positive and in the domain of the given inverse trig. function. Label the triangle. 1. sec^sq(tan^1x) 2. sin(arccot … 
trig
use an inverse trig function to write è as a function of x (There is a right triangle. The hypotenuse is 2. è is the angle between the base and the hypotenuse. The base/adjacent side of è is (x + 1) The side opposite è does not … 
math please help
use an inverse trig function to write theta as a function of x (There is a right triangle drawn. The hypotenuse is 2. Theta is the angle between the base and the hypotenuse. The base/adjacent side of theta is labeled(x + 1) The side … 
trig
Write the expression and evaluate. There should only be one answer which should match the range of the inverse trig function. Sec^1(2) sec^1(sqrt2) Cos^1((sqrt3)/2) Tan^1(sqrt3) Could someone explain how to get the answer as … 
trig
Write the expression and evaluate. There is only one answer whIch should match the range of the inverse trig function. Sec^1(2) Sec^1(sqrt2) Tan^1(sqrt3) Tan^1(sqrt3) 
Trig
What is the period of f(x)=sin4x. I got pi/2 but on my answer list, it is not on there. a.4pi b.2pi c.pi d.1/2pi Which one would i choose? 
Trigonometry
5. If a trig equation has one answer, how many answers will it have?