
Click to view Larger Image of the Front Cover of the Book 





Preface



“Sine of an acute
angle in a right triangle is the ratio of the opposite
side to the hypotenuse. Let’s examine the
properties of sine.”
Stop! Stop!! What a strange definition?! Where
did it come from? Why do we need to study some
sine? Is it only to pass an exam? ... More






Contents



Lesson 1: Protect your nose,
study trigonometry
Lesson 2: It is a duty of every triangle to live
by the laws of sine and cosine
Lesson 3: Angles – acute, properties –
cute ...More 





Extracts
from Chapters 


Lesson 1: Protect your nose,
study trigonometry!
Lesson 2: It is a duty of every triangle to live
by the laws of sine and cosine
Lesson 8: Alien measure of angles or the mystery
of agent 0.017 ...More

