Thursday

December 18, 2014

December 18, 2014

Posted by **lisa** on Friday, November 8, 2013 at 8:16pm.

- ALGEBRA 2 help please would appreciate -
**bobpursley**, Friday, November 8, 2013 at 9:17pmI guess that is 2100 degrees. Well, you know

cos or sin of Theta= cos or sin (theta-n*360)

so what is n?

2100/360= 5 and remainder 120 deg

sin2100= sin120 deg

but sin120=sin(180-120)=sin60

cos2100=cos120=-cos(180-120)=-cos60=-sin30

check this.

**Answer this Question**

**Related Questions**

Algebra 2 .. - 1. An artist is designing triangular mirrors. Determine the ...

Algebra 2.... - 1. An artist is designing triangular mirrors. Determine the ...

Trigonometry/ Please Help - Given sine of alpha=2/3 and cosine of alpha is less ...

Algebra2--- - 1. An artist is designing triangular mirrors. Determine the number...

Geometry - The word cosine literally means "the complement of the sine." Write a...

MATH - 1.)Find the exact solution algebriacally, if possible: (PLEASE SHOW ALL ...

trig - Write the expression as the sine, cosine, or tangent of a double angle. ...

Maths - Please I need help.Iam stuck with this question.Using sine and cosine ...

trigonometry - in triangle abc, angle c is a right angle, AC=8,Bc=15 and AB=17 a...

sine and cosine - Simplify and write the trigonometric expression in terms of ...