1. ## sine(theta)d(theta)

May be it is stupid question but it has been long time since I took calculas course.

How I solve sine(theta)d(theta)

i have to multply certain number with: sine(theta)d(theta) as weighting factor in microsoft excel

gaga

May be it is stupid question but it has been long time since I took calculas course.

How I solve sine(theta)d(theta)

i have to multply certain number with: sine(theta)d(theta) as weighting factor in microsoft excel

gaga
$\int \sin ( \theta ) \, d \theta = -\cos ( \theta ) + C$

3. what is 'C'

I have to solve it in number

Sorry

4. ## Sine(theta)d(theta) ?

Look this is what I want to solve in excel

Y = integral[Xsin(theta)d(theta)]
The integral is broken into 5 (i=1 to 5)

X is the measurments. So I want to solve sin(theta)d(theta) as a weighting factor for the measurment X.

So theta is the midle angle for each circular rings of :

Ring 1: 0.0 - 13°
Ring 2: 16.7 - 27°
Ring 3: 32.4 - 43.4°
Ring 4: 47.3 - 58.1°
Ring 5: 62.3 - 90°

Hope some one is out there to help

5. It sounds like you may not need to take the integral. Can you please post the problem you're trying to solve in full?