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 ( 63+ )
Otras preguntas
What year was Christopher Columbus born in?
100 points again 100 points again 100 points again
Factors that influence standard of living Which of the following factors explains most of the differences in standards of living among countries around the worl
The principle ‘forgive and forget’ helps a lot in maintaining cordial relations with our neighbours. do you think anton chekov conveys this message in the play
Explain why carbon is called ""the backbone"" molecule of organic chemistry and why organic molecules couldn't easily be based on h or o instead.
A cedar raft is 2.4 m wide, 0.30 m high, and 3.0 m long. what is the maximum load (in newtons) the raft can support? assume the density of cedar to be 598 kg/m^
In the treaty of greenville, indigenous groups were forced to give up territories in what modern-day state? a. florida b. ohio c. kentucky
Can I have free vbucks in Fortnit?
2.65 g of sodium carbonate was dissolved in water and made up to 500 ml in a standard flask. 20 ml portions of this solution required 18.50 ml of a solution of
Which poetic device is used in the poem?
