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 ( 15+ )
Otras preguntas
The best definition of pastoralism is
What is 6,007,200 and 32,005,008 in expanded form?
This city was the scene of one of the most violent demonstrations in American history in 1999 when 100,000 people engaged in civil protest against the WTO? Seat
how can a physical map help explain the historical development of a country
what is 829 rounded to the nearest hundred
What is true of the work for all scientists? A. Scientists ask testable questions and devise ways to answer those questions through experimentation or observat
701,245 in word form and 1
what is the value of the digit 1 in the number 0.413
how do you write 32,005,008 in two forms
Select the mathematical sentence that is true. A. 4 • (6 – 2) + 5 < 9 + 3 • 4 B. 4 • (6 – 2) + 5 > 9 + 3 • 4 C. 4 • (6 – 2) + 5 = 9 + 3 • 4
