safax
safax
01-07-2016
Mathematics
contestada
verify the identity cot(x-pi/2)=-tanx
Respuesta :
NiedzielnyMatematyk
NiedzielnyMatematyk
03-07-2016
[tex]\cot(x-\frac{\pi}{2}) = \dfrac{\cos(x-\frac{\pi}{2})}{\sin(x-\frac{\pi}{2})} =\dfrac{\cos(-(\frac{\pi}{2}-x))}{\sin(-(\frac{\pi}{2}-x))} =\dfrac{\cos(\frac{\pi}{2}-x)}{-\sin(\frac{\pi}{2}-x)} =\\=-\dfrac{\sin x}{\cos x} = -\tan x[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 83+ )
Otras preguntas
If a test has 95 questions how many points would each question be worth? Using your answer how many could you miss without going below an 80?
Which device was first used in warfare during the Civil War, allowing for greater communication between generals and to members of press?
Which of the original thirteen colonies is being described below? Free land was offered to immigrants that would come to the area, be patient, and wait for citi
Which of the following contributed to the start of civil wars and Mali's decline
which fossil occurs on the most landmass what does this suggest about when these particular continents broke up
Which was not part of the system of legal discrimination against blacks passed by southern states after the Civil War? A. Reconstruction B. separate but equal C
where did american troops do most of the fighting
how do you write words to match the expression 24-(6+3)
A customer went to a garden shop and bought some potting soil for $12.50 and 6 shrub. If the total bill was $71.00 how Mich did each shrub cost if they all cost
A customer went to a garden shop and bought some potting soil for $12.50 and 6 shrub. If the total bill was $71.00 how Mich did each shrub cost if they all cost
