Saturday
October 25, 2014

Homework Help: advanced functions

Posted by Anonymous on Monday, November 2, 2009 at 3:45pm.

Use the Pythagorean Identify to show that the double angle formula for cosine can be written as:

cos2x = 2cos^2x - 1

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

advanced functions - Use the Pythagorean identity to show that the double angle ...
trigonometry - Use a compound angle formula for cosine to show that cos2x = cos^...
trig or geom - i have to use pythagorean theorem to find the leg-measure of x. ...
Trigonometry - Need help solving problems using the Trigonometric Identities: ...
Pre-Calculus - Find all solutions to the equation in the interval [0, 2pi) cos4x...
trig - Use the double angle formula to verify the identity cotxsin2x=1+cos2x
trig - A coil of wire rotating in a magnetic field induces a coltage E=20sin((...
Trig - If sinx = 1/4 Find the exact value of cos2x I used the formula for double...
Advanced Functions - Determine all solutions in the interval x is all real ...
Trig - If cosx = 10/19 an pi < x < 2pi, find the exact value of cos x/2 ...

Search
Members