No part of this publication may be reproduced, or transmitted, or stored, in any form or
by any means, electronic, mechanical, photocopying, recording, or otherwise, without
the prior written permission of SheetMetalWorkBook.com
Sixth Edition Reformatted for Internet
©2012 SheetMetalWorkBook.com
Solving Triangles
1.C = .
2.D = .
3.E = .
The following problem will probably be one of the most
frequent trig problems that you will encounter while
developing flat patterns with acute bend angles (See Acute
Bends Page:40). You will have to use this problem when a
dimension is given to the center of a radius or if it is
dimensioned tangent to the outside of the material. The
"A" dimension is one necessary for development. The
formula is the same for acute and obtuse angles.
frequent trig problems that you will encounter while
developing flat patterns with acute bend angles (See Acute
Bends Page:40). You will have to use this problem when a
dimension is given to the center of a radius or if it is
dimensioned tangent to the outside of the material. The
"A" dimension is one necessary for development. The
formula is the same for acute and obtuse angles.
4. B =
5. D =
6. A =
7. C =
8. E =
C bisects rays a & b
Rays a & b are
tangent to circle
