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 ( 99+ )
Otras preguntas
where on the scale is bacteria moat likely to grow
how many day is in a dogs year if there is 7 dog years in a human year
which of the following is true of beowulf? a. it is a tragedy. b. it was most likely written by a roman occupant of britain. c. it contains pagan and christian
what is 5+5-5+6-6+999-888+1-889
which of the following is an example of a complex formula
produto carteziano de a={ 1,5,6} por b={2,3,5}, ou seja a#b
Planning for the possiblity that your home might get struck by lightning and catch on fire is part of a plan for _____. a. financing b. managing income c. manag
Henry Ford was the first entrepreneur to implement which strategy? A) assembly line production B) discount pricing C) advertising D) minimum wage levels
Railroads encouraged the growth of settlements in the West because they A. paid people to settle the Great Plains. B. paid to remove local Native Ameri
Susan wants to find someone to do yard work at her house for the summer and fall seasons. WeWork charges a $200 fee and then a $10 per hour fee. Merry mowing ch
