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 ( 17+ )
Otras preguntas
What is mitochondria
One number is 6 more than twice the other number. if the sum of the two numbers is 36, find the two numbers.
what is the sum of odd positive integers less than 50
At a fast food restaurant, four friends each ordered a sandwich for $4.89 each and a drink for $1.69. What is the best estimate of the amount of change they wil
Which absorption rate of minerals is faster plant foods or animal foods?
3∙(a+x), if a=8; x=−10
If a car's __________ is malfunctioning, people in the car will become ill when driving long distances, especially if the windows are closed. A. braking system
Byron uses a poetic technique called _____ to force the reader to _____. A. enjambment; move from one line to the next without pause B. iambic pentameter; pa
the spread use of chop sticks into southeast asian countries with the influx of chinese migrants there is an example of which of the following concepts A. Stim
Two boys on bicycles start cycling from the same place at the same time. one cyclist travels 15 miles per hour, the other travels 12 miles per hour, if they tra
