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Unformatted text preview: HYP angle ADJ OPP C
c angle a RIGHT TRIANGLE
DEFINITION one angle is 900 of all the angles = 1800 INFO NEEDED TO SOLVE one side + one non-900 angle or two sides B b A OBLIQUE TRIANGLE
DEFINITION no 900 angles of all the angles = 1800 INFO NEEDED TO SOLVE two sides + included angle or three sides or two angles + one side if given three angles, can only get relative side lengths GOVERNING EQUATIONS Law of Sines: GOVERNING EQUATIONS Pythagorean Theorem: SOH-CAH-TOA: c2 = a2 + b 2 OPP HYP ADJ cos = HYP OPP tan = ADJ sin =
Also, note sin sin sin = = A B C Use if you have two angles + one side Law of Cosines: C2 = A2 + B2 - 2 AB cos
or B = A + C 2 - 2 AC cos
2 2 tan = sin cos or A = C + B 2 - 2CB cos
2 2 Use if you have two sides + included angle or three sides ...
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This note was uploaded on 06/07/2008 for the course CEE 80 taught by Professor Jabbari during the Winter '08 term at UC Irvine.
- Winter '08