Tuesday

March 3, 2015

March 3, 2015

Posted by **Anonymous** on Sunday, June 16, 2013 at 9:21am.

- Precalc -
**Reiny**, Sunday, June 16, 2013 at 9:54amlet tan^-1 (-√3/3) = Ø

then tanØ = -√3/3

I know tan 30° or tan π/6 = +√3/3

Ø must be in quadrants II or IV

in degrees: Ø = 180-30=150° or Ø = 360-30 = 330°

in radians: Ø = π - π/6 = 5π/6 or Ø = 2π-π/6 = 11π/6

notice that your calculator gives you -30° or -π/6

which is correct since -30° is coterminal with 330°

calculators have been programmed to give the closest answer to zero, which in this case is -30°

the smallest positive answer is 5π/6

**Answer this Question**

**Related Questions**

algebra - (1) if root x-a/x-b + a/b = root x-b/x-a + b/a, b not equal to a, then...

Calculus - Use theta equals inverse tangent of 28/x minus inverse tangent of 6/x...

Calculus - I have a two part question that pertains to a curve (r(x)) and its ...

PreCalc! - sketch a graph whose domain is the interval [0, infinity) but whose ...

Math - find a quadratic equation having 3+root3 and 3-root3

physics - two forces F1 and F2 acting at a point have a resultant F. If F2 is ...

pre calc - i have to use the inverse of tangent to find a missing angle in a ...

Check my precalc - what is the f inverse of f(x)= ln(x-3) I got y= e^x - 4 Solve...

Inverse Trig - Using -pi/2 ≤ y ≤ pi/2, what are the following ...

Precalc (LOGS) - 1. (e^x - 1 )/(x^2 - 1) < 0 2. The inverse of ln (3 - x) ? 3...