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 ( 86+ )
Otras preguntas
What are the2 largest deserts on the Arabian Peninsula?
Cells use oxygen to produce
What are the domain and range of the function {(3, 1), (5, –1), (9, –1), (2, 7), (–4, 1)}? A. Domain: {3, 5, 9, 2 }; Range: {1, 7} B. Domain: {1, –1, 7}; Ran
By tradition, when does the presidential campaign begin? a. After a candidate has gained enough electoral votes in the primaries b. When a candidate is offici
The hardest known natural material is _____. jade quartz diamond talc
Norms that exist in our society include a. financial responsibility. c. not paying bills. b. restrictions against campfires. d. not killing a human being
Moles of CaCl2 are in 1.25×10,23 atoms
When a certain valve is open, 281 gallons go through it in one hour. The number of gallons that would go through in 91 hours is gallons.
. Reggie is making a double-layer cake. The recipe for the layer calls for cups of sugar. The recipe for the second layer calls for cups of sugar. Reggie has
If a cart of 2 kg mass has a force of 8 newtons exerted on it, what is its acceleration?
