Thread: Conflicting angle answers

Solve for angle A,
b=1.64
c=3.51


COSA=b/c
=cos^-1(3.1/3.51)
= 27.97 deg.

a^2=c^2-b^2
= 3.51^2-1.64^2
a= 3.1

If I take the numbers for a,b & c and make a drawing in my CAD program I get A=62 deg.

Originally Posted by cross1933

Solve for angle A,
b=1.64
c=3.51


COSA=b/c
=cos^-1(3.1/3.51)
= 27.97 deg.

a^2=c^2-b^2
= 3.51^2-1.64^2
a= 3.1

If I take the numbers for a,b & c and make a drawing in my CAD program I get A=62 deg.

Hi

COSA=b/c
=cos^-1(1.64/3.51)
= 62.14 deg.

Originally Posted by running-gag

Hi

COSA=b/c
=cos^-1(1.64/3.51)
= 62.14 deg.

I must be loosing. The formula is on my page and I entered the incorrect numbers. If there was a smile for "brain dead" I would have put it in.