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 ( 92+ )
Otras preguntas
Licensee jake found a buyer for seller norm's house within three days of taking the listing. seller norm has now refused to sell. how does this impact licensee
The sum of the components of anything equals the whole thing. Which property/postulate does this statement represent?
One half of a number decreased by 16
According to the regulations, to be approvable, research participation must provide a tangible benefit to the individual research subjects. a. True b. False
HELP ME PLEASE !! IM SO CONFUSED
Which of these were full citizens in ancient athens?
Consider the following pair of equations: −x − y = −5 y = x + 1 If the two equations are graphed, at what point do the lines representing the two equations int
WHICH IS NOT PART OF THE NITROGEN CYCLE? A. THE ATMOSPERE B. PLANTS C. PHOTOSYTHESIS D. SOIL
There are 21 different coffee flavours at the cafe. oddly, each student in my 8 am class has a favourite flavour there. there are just enough students in the cl
Describe how a plasmid can be genetically modified to include a piece of foreign dna that alters the phenotype of bacterial cells transformed with the modified
