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PLANE TRIGONOMETRYREFERENCES: Gelfand, I. M., and M. Saul, Trigonometry, Birkhäuser, Boston, 2001; Heineman, E. Richard, and J. Dalton Tarwater, Plane Trigonometry, 7th ed., McGraw-Hill, New York, 1993.
ANGLES An angle is generated by the rotation of a line about a fixed center from some initial position to some terminal position. If the rotation is clockwise, the angle is negative; if it is counterclockwise, the angle is positive. Angle size is unlimited. If α and β are two angles such that α + β = 90°, they are complementary; they are supplementary if α + β = 180°. Angles are most comm…
Dr. Don W. Green; Dr. Marylee Z. Southard: Perry's Chemical Engineers' Handbook, 9th Edition. PLANE TRIGONOMETRY, Chapter (McGraw-Hill Professional, 2019), AccessEngineering Export