Thursday

January 29, 2015

January 29, 2015

Posted by **Kate** on Sunday, November 6, 2011 at 9:19pm.

- trig -
**Steve**, Monday, November 7, 2011 at 11:48amUsing the identity cos(a-b) = cos a cos b + sin a sin b

cos(θ-50) = cosθcos50 + sinθsin50

= .64cosθ + .77sinθ

so,

19cos(θ-50) = 19(.64cosθ + .77sinθ)

= 12.16cosθ + 14.63sinθ

**Answer this Question**

**Related Questions**

trig - write equations expressing: 19cos(theta-50degrees) as a sum of sine and ...

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

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

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

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

trig - simplify and write the trigonometric equation in terms of sine and cosine...

trig - The terminal side of an angle includes the point (5,-12). Give the sine, ...

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

trigonometry - how do you find sin theta and cosine theta of angles? ex. Find ...

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