# more trig

• May 26th 2005, 03:03 PM
kelsey
more trig
another form of cos(30deg-A)+sin(60deg+A)
sinx?
• May 26th 2005, 10:49 PM
paultwang
$\displaystyle 2\,\sin(\frac{1}{3}\,\pi +A)$

Reply if you need more explanations.
• May 27th 2005, 05:46 AM
kelsey
sorry stated the question wrong
the equations is cos(30(degrees)-A + sin(60(degrees) + A)

is one of the froms of this equation $\displaystyle sinx$
• Jun 1st 2005, 06:54 AM
paultwang
Please rephrase your entire question using proper and syntax-checked sentences and expressions.

No, that is not an equation. An equation contains the equal sign.
• Jun 1st 2005, 07:17 AM
Math Help
Is what you mean:

1. $\displaystyle (cos(30)-A) + sin(60 + A)$
2. $\displaystyle cos(30-A) + sin(60 + A)$
3. $\displaystyle cos(30-A + sin(60 + A))$
• Jun 1st 2005, 07:29 AM
paultwang
Quote:

Originally Posted by Math Help
Is what you mean:

1. $\displaystyle (cos(30)-A) + sin(60 + A)$
2. $\displaystyle cos(30-A) + sin(60 + A)$
3. $\displaystyle cos(30-A + sin(60 + A))$

In the cases of 1 and 3, there are no better ways to reduce the number of terms. In the case of 2, I already gave the result.