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 ( 98+ )
Otras preguntas
Which of the following would not be deleted or replaced when editing your essay for more concise writing? A particular B regarding C as a whole D all of a sudde
an athletes diet should consist of
How can a person guard against a decrease in heart and lung function?
How did food surpluses change the way of life in early human settlements? A-villages needed to organize governments B-the population decreased C-more hunting a
If AB = AD + DB and AD = AC, then AB = AC + DB because of the
If you believe a person is having a stroke you should
A mural inspired by a photograph measures 108 inches by 108 inches the scale factor is 12 what are the dimensions of the photograph
What are the ethical implications of online social media after someone has died? What ethical concerns might exist?
Jessica and Nancy are members of different video game libraries. Jessica pays a membership fee of $40, and she pays $5 for every video game she rents. The follo
What attracted Americans to sunbelt in the 50
