Use the polygon tool to draw a right triangle with hypotenuse AB?

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

Find cot x if sin x cot x csc x = √2

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319