Find sec 3660 without using calculator
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What is sec??????????
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What we want to do is find out how many 180’s we can subtract from 3660° and end up with an angle between 0 and 180°.
Use long division: 3660 ÷ 180 = 20 remainder 60
What is the tangent of a 60° angle?
tan(60°) = tan(3660°)
Solve your problem the same way.
REMEMBER: If you do this with sines, cosines, secants or cosecants, you must use a period of 360°.
Only tangents and cotangents have a period of 180°.
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