Hi

I want to calculate theta1 and theta2 . anyone help me.

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- February 26th 2008, 10:21 PMkumarrectangle angles
Hi

I want to calculate theta1 and theta2 . anyone help me. - February 26th 2008, 10:54 PMearboth
- February 26th 2008, 11:03 PMkumar
Hi earboth

Thanks for ur reply. I have to take full lenght and width of rectangle , or length/2 or widht /2. Is this will give correct angle in degrees? if not what I have to do for getting angle in degrees. - February 27th 2008, 01:06 PMearboth
- February 27th 2008, 09:29 PMkumar
Hello earboth

Thanks. That is one rectangle only, for explanation only I created diagonals, and mid lines( vertical, horizondal). I cannot use calculator(this is for my project , programatically i need), I need a formula to get angle in degrees. please explain to get all angles of diagonals from the mid point.( theta1 to theta8) - February 27th 2008, 10:34 PMearboth
If you calculate

it doesn't matter which rectangle you use because all marked rectangles are similar to the complete rectangle. (see attachment)

By law of symmetry you can proof that

1.)

and

2.)

But I can't help you with the exact value of the angle because I don't know the measures of the rectangle. - February 27th 2008, 11:23 PMkumar
Thanks earboth.