Ducksters
Ducksters: Kids Math: Multiplying and Dividing Fractions
Learn about how to find reciprocal on this webpage. The page focuses on multiplying and dividing fractions.
Homeschool Math
Homeschool Math: Dividing Fractions: Using the Shortcut
In this lesson, learn how to divide fractions using the shortcut of reciprocal numbers which is shown in the accompanying video. [10:31] The lesson also includes practice problems and many word problems.
University of Saskatchewan (Canada)
University of Saskatchewan: Trigonometric Identities
The University of Saskatchewan provides an explanation of trigonometric identities, including the reciprocal identities, the addition and subtraction formulas with sine and cosine, and the double angle formulas. There are links to...
Khan Academy
Khan Academy: Reciprocal Trig Ratios
Understand the right triangle definition of sec, csc, and cot ratios. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: How to Multiply Fractions; How to Divide Fractions
Students solve fraction multiplication and division problems. To see the answers, learners need to roll their mouse over the colored area.
Math Words
Math words.com: Trig Identities
This MathWords.com site lists the equations for all of the trigonometric identities.
Lawrence Hall of Science
The Math Page: Topics in Pre Calculus: Rational Functions
Here is a site that clearly and thoroughly explains how to find the roots of polynomials of degree greater than two. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this...
Lawrence Hall of Science
The Math Page: Trigonometry: Trigonometric Identities
This resource clearly and thoroughly explains the many types of trigonometric identities. There are example problems solved, problems for the student to attempt, and answers to the student problems.
Oswego City School District
Regents Exam Prep Center: Unit Circle
Two hands-on lab activities for instructors to use when teaching about the coordinate graphs of the sine, cosine, and tangent functions derived from a unit circle. The graphs of the reciprocals of the three functions are investigated....
Oswego City School District
Regents Exam Prep Center: Six Trigonometric Functions
The mathematics session investigates the six trigonometric functions and reciprocal functions. The tutorial consists of class notes, calculator tips, examples, and practice problems with solutions. The teacher resource includes the Greek...
Math Words
Math words.com: Golden Mean
A basic definition for what the Golden Mean (Golden Ratio) is and how to find its reciprocal.
Illustrative Mathematics
Illustrative Mathematics: G Gpe.5 Triangles Inscribed in Circle
For this task, students use ideas about linear functions to determine when certain angles are right angles. They use the fact that two lines (if not vertical or horizontal) are perpendicular when their slopes are inverse reciprocals, as...
CK-12 Foundation
Ck 12: Arithmetic: Quotients of Fractions
[Free Registration/Login may be required to access all resource tools.] In this lesson students find the quotient of two fractions by multiplying by the reciprocal. Students examine guided notes, review guided practice, watch...
Illustrative Mathematics
Illustrative Mathematics: G Gpe Slopes and Circles
The purpose of this task is to lead young scholars through an algebraic approach to a well-known result from classical geometry, namely, that a point X is on the circle of diameter AB whenever angle AXB is a right angle. This consists of...
The Math League
The Math League: Fractions
This tutorial covers all types of fractions with simple explanations on how to work with them.
Interactive Mathematics
Interactive Mathematics: Trigonometric Functions
Just about everything you need to know about trigonometry can be found here. Interactive examples and demonstrations help to enhance the lessons. Although not required, the tutorial uses Live Math and Scientific Notebook.
Oswego City School District
Regents Exam Prep Center: Parallel and Perpendicular Lines
This site displays formulas and examples, pertaining to slope, for parallel and perpendicular lines.
Sophia Learning
Sophia: Dividing Whole Numbers by Fractions: Lesson 2
This lesson goes over how to divide a whole number by a fraction. It is 2 of 11 in the series titled "Dividing Whole Numbers by Fractions."