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Basic trig definitions

sine opposite/hypotenuse
cosine adjacent/hypotenuse
tangent opposite/adjacent
What is the word we use to help us remember trig? S o/h C a/h To/a
What buttons on the calculator do we use to find an angle? sin-1, cos-1, and tan -1
What do we do to find the length of a side? Set up a proportion and cross-multiply.
If sin x = cos y, what do you know about the angles? x + y = 90.
What do we use when the triangle isn't a right triangle? Law of Sines a/sinA = b/sinB =c/sinC
What are the Pythagorean Identities? sin^2 + cos^2 = 1 tan = sin/cos
Created by: adowett