Use trigonometric identities to simplify each expression.

1/cot^2 (x) - 1/cos^2(x)

Find the equation of the line that goes through the points (4, –1) and (2, –5). use slope formula,equation,to find the slope of a line that passes through the points. m = use slope-intercept form, y = mx + b, to find the y-intercept (b) of the line. b = write the equation in slope-intercept form, y = mx + b.

An equation where variables are used to represent known values—function notation true or false

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?