Stitz-Zeager_College_Algebra_e-book

# Thus and are complementary angles show that sin cos

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Unformatted text preview: uggests, in an oriented 6 If this process seems hauntingly familiar, it should. Compare this method to the Bisection Method introduced in Section 3.3. 7 Like ‘latus rectum,’ this is also a real math term. 8 This is the exact same kind of ‘borrowing’ you used to do in Elementary School when trying to ﬁnd 300 − 125. Back then, you were working in a base ten system; here, it is base sixty. 598 Foundations of Trigonometry angle, the direction of the rotation is important. We imagine the angle being swept out starting from an initial side and ending at a terminal side, as shown below. When the rotation is counter-clockwise9 from initial side to terminal side, we say that the angle is positive; when the rotation is clockwise, we say that the angle is negative. al in T er m er T m in al Si de Initial Side d Si e Initial Side A positive angle, 45◦ A negative angle, −45◦ At this point, we also extend our allowable rotations to include angles which encompass more than one revolution. For example, to sketch...
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