in another chapter we went through sine, cosine, and tangent for right triangles. for this we use the 'word' SOHCAHTOA. this means that sine equals opposite over hypotenuse, cosine equals adjacent oer hypotenuse, and tangent equals opposite over adjacent. to do this you are given the information that the triangle is a right triangle and either a side length and an angle other than the 90 degree one or two side lengths. in order to solve, though, a triangle must be drawn.
For example:
angle C = 90 degrees
angle A = 12 degrees
side b = 4
side a = ?
tan 12 = a/4
a = 4tan12
a = .9
~~> obviously i can't draw a triangle on here. but i took the opposite side length of angle A which was unknow and put it over the adjacent side length which was 4. since tangent is opposite over adjacent.
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