Verify the Identity

cot (x - pi/2) = - tan x

How many time can 25 go in 389

In a 50 - question test, the highest score in the class is three times the lowest score minus four. The difference between the highest score and the lowest score is 30. What is the highest score? A) 37 B) 27 C) 47 D) 28

There ate 4 more oranges than apples in the fruit bowl, there ate 5 more apples than bananas. there are 2 bananas. how many of each type of fruit is in the bowl? how many pieces of fruit in all?

Simplify fraction 40/85

The force on an object is represented by the complex number 8+21i, where the components are measured in pounds. 4) Find the magnitude of the force. 5) Find the direction of the force. Unsure as to how to go about this problem.

Mark's test score was 5 less than Sam's test score. Using x to represent Sam's score, write an algebraic expression to represent Mark's score.

In order to solve x 2 + 12 x = 2 by completing the square, what value must be added to both sides?

A guy has 24 inches of yarn. How many feet of yarn does he have

The line parallel to the x axis and 6 units below it

A clock has a face with a radius of 11.5 centimeters. What is the approximate circumference of the clock? A. 72.22 cm B. 36.11 cm C. 3.66 cm D. 18.06 cm