Monday

March 2, 2015

March 2, 2015

Posted by **Natalie** on Sunday, April 7, 2013 at 1:13pm.

cos (x+pi/6) +sin (x-pi/3) = 0

- Precalculus with Trigonometry -
**Reiny**, Sunday, April 7, 2013 at 1:18pmI will use 30° and 60° , easier to type

cos (x+300) +sin (x-60)

= cosxcos30 - sinxsin30 + sinxcos60 - cosxsin60

= (√3/2)cosx - (1/2)sinx + (1/2)sinx - (√3/2)cosx

= 0

= RS

**Answer this Question**

**Related Questions**

Precalculus with Trigonometry - Prove or disprove the following identity: (sin(...

Precalculus with Trigonometry - Prove or disprove the following Identities: cos...

Precalc - Prove or disprove the following identity. cos(-x) - sin(-x) = cos(x...

Trigonometry - Prove the identity sin(x+y+z)+sin(x+y-z)+sin(x-y+z)+ sin(x-y-z...

Trig Identity - Prove or disprove the following identity sin^4theta - cos^4theta...

precalculus - For each of the following determine whether or not it is an ...

Math - Calculus - The identity below is significant because it relates 3 ...

Trigonometry desperate help, clueless girl here - 2. solve cos 2x-3sin x cos 2x...

Trigonometry - 1.Solve tan^2x + tan x – 1 = 0 for the principal value(s) to two ...

Precalculus - Prove or disprove cos(x+y)cos(x-y)=cos squared (x) - Sin squared (...