Thursday

December 18, 2014

December 18, 2014

Posted by **mariya** on Monday, February 4, 2008 at 7:02pm.

ex. Find the sine theta and cosine theta of 150 degrees as well as the degrees in radians?

- trigonometry -
**drwls**, Monday, February 4, 2008 at 8:26pmFor the sine and cosine functions, you need a calculator, a slide rule (if there is one in the attic) or a table of trigonometric functions. There are also web sites you can use.

Sin 150 degrees = 1/2, exactly

cos 150 degrees = -(sqrt 3)/2

You can prove that with geometry, but other angles usually require a calculator or table.

To convert an angle in degrees to radians, multiply it by pi/180.

- trigonometry -
**mariya**, Monday, February 4, 2008 at 8:31pmthanks we have a table but we have to fill it out ourselves and i wasnt sure how to do it.

- trigonometry -

**Answer this Question**

**Related Questions**

trig - If cosecant of theta equals 3 and cosine of theta is less than zero, find...

Trigonometry - express in terms of sine and cosine. a) tan theta/ cot theta i ...

Trig(continued) - 2)Find the solution of sin2 theta = cos theta if 0 -< theta...

Pre Cal - 2cos 4theta + 1 = 0 i know how to find the degrees (the last step of ...

math - consider an angle in standard position with r=12 centimeters. write a ...

Algebra II - Multiple Choice (theta) means the symbol 0 with the dash in it. 1.)...

Trigonometry - The question was: "Given that sin theta is -1/2 and theta is in ...

calculas - If sin theta equals two third and zero degrees less than theta less ...

Trigonometry - I don't understand how I'm supposed set the problem up or what ...

math - write each expression in terms of sine and cosine: csc^3 theta/cot theta...