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 ( 54+ )
Otras preguntas
I need hellllllllllllllllllllppppp for this trigonometry question
Sam is a painter. He has 2 1/4 gallons of paint, and it takes 3/4 of a gallon to paint a room. How many rooms can he paint? A.1 B.2 C.3 D.4
He had in wizardry among the Cyclops, and these things he foretold for time to come: my great eye lost, and at Odysseus' hands. Always I had in mind some giant,
Alex has a rectangle piece of red paper that is 4 centimeter wide .its length is twice it's width she glues a piece of paper blue paper on top of the red piece
what is pie i am am confused i need help
Mcgraw hill world geography vocabulary activity how geographers look at the world worksheet answers
Do you think it is important today for the senate to have more stability than the house of representatives?
Until modern times, art works have been primarily devoted to ______________ themes.
science uses blank to support its explanation
When a hindu widow voluntarily threw herself on her dead husband's funeral pyre it was known as?
