Purchase Solution

# Verify the given the trigonometric identities

Not what you're looking for?

The trigonometry identities to be proved:

1) cos(4x) = 1 - 8sin^2(x) + 8sin^4(x)
2) tan(4x) = [4tan(x) - 4tan^3(x)]/[1 - 6tan^2(x) + tan^4(x)]
3) 2cos(4x)sin(2x) = 2sin(3x)cos(3x) - 2sin(x)cos(x)
4) 2sin(x)sin(2x) = 4cos(x)sin^2(x)
5) cos(x+y)cos(x-y) = cos^2(x) + cos^2(y) - 1
6) cos(x+y)sin(x-y) = sin(x)cos(x) - sin(y)cos(y)

##### Solution Summary

In this posting, proofs of the given trigonometric identities are shown.

##### Graphs and Functions

This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.

Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.

##### Probability Quiz

Some questions on probability

##### Exponential Expressions

In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.