Trig+Review

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=The Basics=



This is a triangle that fits with Sin (ø) = Opposite/ Hypotenuse = a/c Cos (ø) = Adjacent/ Hypotenuse = b/c Tan (ø) = Opposite/ Adjacent = a/b

---> SOHCAHTOA!!!!!

=BOINK!!!!=

Secant sec (ø) = 1 / (cos (ø))

Cosecant csc (ø) = 1/ (sin (ø))

Cotangent cot (ø) = 1 / (tan(ø))

WHAT FUN!

=THE LAWS!!! (the crackdown)= Law of Cosine c² = a² + b² - (2abcos (C))

Must know SAS- side angle side SSS- side side side

Law of Sine ____a___ = ___b___ = ___c___ Sin (A) Sin (B) Sin (C)

=UNIT CIRCLE Triangles= A = Ø = 30º = (pi)/6 so a = 1/2 B = 60º = (pi)/3 so b = (3)¹/² / 2 C = 90º = (pi)/2 so c = 1

or

A = Ø = 45º = (pi)/4 so a = 1/(2)¹/² B = 45º = (pi)/4 so b = 1/(2)¹/² C = 90º = (pi)/2 so c = 1