PROOF WITHOUT WORDS: THE THREE COSINES IDENTITY,CALCULATING AN AREA

Homepage / Old RMM / Geometry articles / PROOF WITHOUT WORDS: THE THREE COSINES IDENTITY,CALCULATING AN AREA

PROOF WITHOUT WORDS: THE THREE COSINES IDENTITY,CALCULATING AN AREA

Posted on March 13, 2020 by ssmrmh

MathNote by Martin Celli, Iztapalapa-Mexico City-Mexico

THE THREE COSINES IDENTITY,CALCULATING AN AREA

Posted in Geometry articlesTagged Martin Celli

RMM

Romanian Mathematical Magazine

The Romanian Mathematical Magazine appears in four editions: Spring, Summer, Autumn and Winter. Each issue contains proposed problems for juniors, seniors, undergraduates and math articles.

We are glad to publish in RMM author’s problems and articles from all over the world.

Latest Articles

A SIMPLE PROOF FOR SANDOR’S INEQUALITY 03/28/2024
A NEW PROOF FOR IONESCU-WEITZENBOCK’S INEQUALITY USING THE TORICELLI’S POINT 03/22/2024
A SIMPLE PROOF FOR DURELL’S INEQUALITY 02/28/2024
A NEW MEHMET ȘAHIN’S CONFIGURATION 11/07/2023
CERTAIN LIMITS OF FIBONACCI AND LUCAS SEQUENCES AND FUNCTIONS 10/11/2023