Please answer this in Erlang:

Function myTan that takes one argument that represents sine of an angle and returns the tangent of that angle using the following equation: tan=1sin2sin Assume that in our case the denominator will be positive. For example, if the function is called with a value 0.57, then 0.69 is retuned. You do NOT have to guard against invalid input. Use square root and power functions defined in the math library