Tuesday

September 23, 2014

September 23, 2014

Posted by **patrick** on Saturday, September 15, 2012 at 4:40pm.

- trig -
**Reiny**, Saturday, September 15, 2012 at 7:43pm-20000/360 = -55.555555..

= -55 - 200/360

so we have 55 clockwise rotations and then another clockwise rotation of 160°

OR

360-200 = 160° in the counterclockwise of positive rotation direction

160° is in the second quadrant, where the sine is positve and we are 20° from the x-axis

so the reference angle is 20°

sin(-20000) = sin20

cos(-20000) = -cos20

tan(-20000( = -tan(20)

I will let you do the cosecant, secant, and cotangents

test the above 3 with your calculator.

that is,

sin -20000 - sin 20 should be zero, it is on mine.

**Answer this Question**

**Related Questions**

MATH PLEASE - can a reference angle be negative? Tye "reference angle" in google...

trig - (a) sketch an angle A in standard position whose terminal ray passses ...

trig - find the exact values of THE SIX TRIGONOMETRIC FUNCTIONS OF THE ANGLE ...

trig - Find the values of the six trigonometric functions of the angle in ...

trig - Find the values of the six trigonometric functions of an angle 0 in ...

Math Trig - Find the values of the six trigonometric functions of an angle in ...

Math Trig - Find the values of the six trigonometric functions of an angle in ...

Math- Trigonometry - The point, in on the terminal side of an angle in standard ...

trig - the terminal side of an angle theta in standard position coincides with ...

Math(Correction) - Use the given function values and trigonometric identities (...