Multiple ChoiceGiven a right triangle where the length of the adjacent side to angle x is 1 and the hypotenuse is 2, in which triangle is the value of x equal to cos−11/2 (that is, x=arccos12)?39views
Multiple ChoiceGiven the function y=cot(x), which of the following statements is true about its inverse function y=arccot(x)?15views
Multiple ChoiceEvaluate the expression. cos−1(−22)\cos^{-1}\left(-\frac{\sqrt2}{2}\right)cos−1(−22)558views6rank