Casio FX-9860GII-L-IH User Guide - Page 86
Trigonometric and Inverse Trigonometric Functions, Example, Operation, <Line>, <Math>
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2-4-4 Function Calculations k Trigonometric and Inverse Trigonometric Functions • Be sure to set the angle unit before performing trigonometric function and inverse trigonometric function calculations. (90° = -2-π- radians = 100 grads) • Be sure to specify Comp for Mode in the Setup screen. Example sin 63° = 0.8910065242 cos (-π- rad) = 0.5 3 Operation !m(SET UP)cccccc 1(Deg)J s63w !m(SET UP)cccccc 2(Rad)J c(!E(π)/3)w c$!E(π)c3w tan (- 35gra) = - 0.6128007881 !m(SET UP)cccccc 3(Gra)J t-35w 2 • sin 45° × cos 65° = 0.5976724775 !m(SET UP)cccccc 1(Deg)J 2*s45*c65w*1 cosec 30° = 1 sin 30° = 2 !m(SET UP)cccccc 1(Deg)J 1/s30w $1cs30w sin-10.5 = 30° (x when sinx = 0.5) !m(SET UP)cccccc 1(Deg)J !s(sin-1)0.5*2w *1* can be omitted. *2Input of leading zero is not necessary. 20050401