Texas Instruments TI-34 II Teachers Guide - Page 101
Trigonometry
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Trigonometry 13 Keys The numbered paragraph provides an explanation for the corresponding numbered key on the illustration below. 1. % B displays a menu of all trigonometric functions (sin, sin-1, cos, cos-1, tan, tan-1). sin calculates the sine. sin-1 calculates the inverse sine. cos calculates the cosine. cos-1 calculates the inverse cosine. tan calculates the tangent. tan-1 calculates the inverse tangent. Notes • The examples on the transparency masters assume all default settings. • Before starting a trigonometric calculation, be sure to select the appropriate angle-unit setting (degree or radian-See Activity 16, Angle Settings and Conversions). The calculator interprets values according to the current angle-unit setting. • E ends a trig function. 1 © 1999 TEXAS INSTRUMENTS INCORPORATED TI-34 Û: A Guide for Teachers 95