what is the value of tan40degree
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Use Maclaurin series for the expansion of tangent function.
where x is the angle in radians
x = 40 degrees = (40/180) pi = (2/9)pi = 0.7 radians (approx)
tan(40 o ) = 0.7 + (0.7) 3 /3 + 2 (0.7) 5 /15 + 17 (0.7) 7 /315 + .......... neglecting the higher degrees.
tan(40 o ) = 0.7 + 0.11433 + 0.0224 + 0.004
tan(40 0 ) = 0.84 (approx)
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