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 ( 59+ )
Otras preguntas
What is the name of a group of connected and related organisms? O A. Energy B. Matter O C. Flow O D. System
In the United States what fraction of people die from cancer ?
What is the sum of 2.5 × 104 and 3.4 × 104? (1 point)
If I dilute 120 mL of a 1.3 M solution until the new concentration is 0.83 M, what is the new volume? Round to the nearest WHOLE NUMBER and DO NOT include units
The four organic molecules are listed below. Which ones do you get from the foods you eat? Check all that apply.CarbohydrateNucleic AcidsProteinsLipids
What reasoning correctly pairs a body system with its relationship to the digestive system?
Two students were asked to use estimation strategies to finda reasonable solution to this question:A market sells blueberries for $3 per pint. The first day, th
The equipment account had a $36,000 balance at the beginning of the year, and a $30,000 balance at the end of the year. The accumulated depreciation account had
I need help with this
Think Critically: Use your knowledge of food chains and energy pyramids to explain why fewer lions than gazelles live on the African plains?
