Math

why does tan(-120) = - 0.71312301

and not sqrt 3 ?

I tried making a graph and still came up with sqrt 3??

1. 👍 0
2. 👎 0
3. 👁 88
1. so what would 0.71312301 be as a sqrt?

1. 👍 0
2. 👎 0
2. tan -120 = (sqrt(3)) = 1.73205
coterminal with 240 deg in QIII so positive

reference angle is 60

Where did you get - 0.71312301
Are you using a cal. set to the wrong setting, rads vs degrees?

1. 👍 0
2. 👎 0
3. I used a calculator to check my answer, (which was originally sqrt 3) and then on the calculator I got 0.713... so I was confused ... anyway thank you

1. 👍 0
2. 👎 0
4. also, for even vs. odd functions it saids that tan(-angle) = - tan(angle)

so that doesn't matter since tan is positive in the QIII?

1. 👍 0
2. 👎 0

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The text passage contains multiple mathematical questions and discussions, including questions about the value of the tangent function at -120 degrees, the use of calculators, and properties of even and odd functions.
multiple_questions
Given a text passage, determine:
    1. If it contains a mathematical question (including word problems or calculations)
    2. If an answer to that mathematical question is provided in the text

First, describe the content structure you found in 1-2 sentences.

Then provide your analysis in the following format:
TYPE: <one of the following values>
- NO_QUESTION
- SINGLE_QUESTION
- SINGLE_QUESTION_WITH_ANSWER
- MULTIPLE_QUESTIONS
- MULTIPLE_QUESTIONS_WITH_ANSWERS
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Math

why does tan(-120) = - 0.71312301

and not sqrt 3 ?

I tried making a graph and still came up with sqrt 3??

1. 👍 0
2. 👎 0
3. 👁 88
1. so what would 0.71312301 be as a sqrt?

1. 👍 0
2. 👎 0
2. tan -120 = (sqrt(3)) = 1.73205
coterminal with 240 deg in QIII so positive

reference angle is 60

Where did you get - 0.71312301
Are you using a cal. set to the wrong setting, rads vs degrees?

1. 👍 0
2. 👎 0
3. I used a calculator to check my answer, (which was originally sqrt 3) and then on the calculator I got 0.713... so I was confused ... anyway thank you

1. 👍 0
2. 👎 0
4. also, for even vs. odd functions it saids that tan(-angle) = - tan(angle)

so that doesn't matter since tan is positive in the QIII?

1. 👍 0
2. 👎 0

Similar Questions

1.) Find an expression equivalent to sec theta sin theta cot theta csc theta. tan theta csc theta sec theta ~ sin theta 2.) Find an expression equivalent to cos theta/sin theta . tan theta cot theta ~ sec theta csc theta 3.)

2. math-Inverse functions

f(x)=-4x-2 & g(x)=5x-6. Find (f*g) and state domain. f(x)-x^2-1 what is the equation for f^-1(x)? f(x)=3x+2, find f(f^-1(14)). f(x)=4x+7 and g(x)=3x-5 find (f*g)(-4) f(x)=sqrt x+3 what is equation for f^-1(x)? Graph y=sqrt x-2 +5

3. math

The line y=2x + b is tangent to the graph y= sqrt x at the point P= (a,sqrt a). Find P and determine b

4. Trig

Find the exact values of the six trigonometric functions 0 if the terminal side of 0 in standard position contains the points(-5,-4). (0 is not the number zero I don't know what its called) I have to find r first. r=sqrt x^2+y^2

1. algebra

am I right? 1. Simplify radical expression sqrt 50 5 sqrt ^2*** 2 sqrt ^5 5 sqrt ^10 5 2. Simplify the radical expression sqrt 56x^2 28x 2x sqrt 14*** 2x sqrt 7 sqrt 14x2 3. Simplify the radical expression. sqrt 490y^5w^6 2 sqrt

2. calculus

answer the questions about the following function f(x)= 10x^2/x^4+25 a. is the point (-sqrt 5,1) on the graph b. if x=3, what is f(x)? what point is on the graph of f? c. if f(x)=1, what is x? what points are on the graph? d. what

3. Pre-Cal

1)tan 5 degrees + tan 25 degrees / 1 tan 5 degrees tan 25 degrees = sqrt 3 / 3 Am I correct? 2) Complete the identity tan^2Q - 3sinQtanQsecQ = -2tan^2Q Correct?

4. Math

Evaluate the integral from [sqrt(pi/2), sqrt(pi)] of x^3*cos(x^2) by first making a substitution and then using integration by parts. I let u = x^2 and du= 2x dx but then it doesn't equal that in the equation?

1. algebra

simplify: sqrt (28) a) 4 sqrt (7) b) 7 sqrt (2) c) 2 sqrt (7) d) sqrt (7) c im just making show that they are correct sorry for posting up so many

2. math;)

Find the unit vector in the direction of u=(-3,2). Write your answer as a linear combination of the standard unit vectors i and j. a. u=-3[sqrt(13)/13]i+2[sqrt(13)/13]j b. u=-3[sqrt(5)/5]i+2[sqrt(5)/5]j c.

3. Math:)

A person is on the outer edge of a carousel with a radius of 20 feet that is rotating counterclockwise around a point that is centered at the origin. What is the exact value of the position of the rider after the carousel rotates

4. MATH

For each set of numbers, draw your own number line on a piece of paper, taking care to plot each pair of irrational numbers. Then write a statement comparing the position of the two given numbers on a number line. Also write an
user
The text passage contains multiple mathematical questions and discussions, including questions about the value of the tangent function at -120 degrees, the use of calculators, and properties of even and odd functions.

TYPE: MULTIPLE_QUESTIONS