samoka
samoka
02-04-2017
Mathematics
contestada
Does anyone can help me to prove that ...
Respuesta :
ghanami
ghanami
02-04-2017
hello :
by identity : cos²(x)+sin²(x) = 1
divide by cos²(x) :
cos²(x) /cos²(x) +sin²(x)cos²(x)/ = 1/cos²(x)
1+sin²(x)cos²(x)/ = 1/cos²(x)
1+ (sin(x)/cos(x))² = 1/cos²(x)
1+tan²(x) = 1/cos²(x)
conclusion :
tan²(x) = 1/cos²(x) -1
Answer Link
VER TODAS LAS RESPUESTAS ( 82+ )
Otras preguntas
In Harry Potter and the chamber of secrets when Ron received the howler what one good thing did it to?
A student creates a function (r), to model the path of a T-shirt launched from a T-shirt cannon using a quadratic function. The shape of the parabola is correct
which atmospheric constituent predominately cools the atmosphere?
HELP ASAP Gina doesn’t agree with her town’s new policy about public playgrounds. The local newspaper’s editor has given her half a page to write an article sup
In models of magnetic and electric fields, why are field vectors depicted by arrows? A. because they represent their direction, but not their magnitude B. becau
What did the ancient Israelites believe?
What are two differences between California constitution and the U.S. Constitution
A circular trampoline has a radius of 8feet. To the nearest square foot, what is the area of the trampoline
What happens when light hits the rough surface of a tree? A. The light is scattered in many different directions, B. The light is refracted through the tree, C.
If kinetic energy is tripled what happens to centripetal acceleration.
