Question 624237
find sine, if given the tan of 1.936
Plot the terminal point on the x-y plane, point (1,1.936)
tan = y/x, a line from the Origin thru the point will have the atan(1.936) (from the x-axis)
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{{{r = sqrt(1^2 + 1.936^2) = sqrt(4.748096)}}}
r =~ 2.179
sin = y/r
sin =~ 0.88848
Note:  this is the principal value in Quadrant 1
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Find tan(t), if given the sec of 1.3698
cos = 1/sec = 1/1.3698
{{{sin(t) = sqrt(1 - cos^2(t)) = 0.46705}}}
tan = sin/cos = 0.63977
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