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 ( 94+ )
Otras preguntas
Which of the following correctly completes the explicit list function with a specified size count? a) explicit list(size_type count) b) explicit list(size_type
Solve the system. x-y+5z=3 2x+3y-z=2 -4x-y-9z=-8
Explain the relationship between risk and return as it applies to investments
Candice’s first job was at the grocery store making deli food. While in culinary school, she worked part time in a restaurant kitchen, and after finishing schoo
What does the underlined phrase indicate about the author's feelings toward Frida Kahlo?
WHAT IS THE MEANING OF THE PHRASE IN THE PEOM "THE HEART THAT FED" ? OZYMANDIAS PEOM CLASS 11 ENGLISH PLEASE ANSWER IN EASY WORD
Solve x^2= 20 , where x is a real number.
"We interrupt your regular programming to bring you a special report. This is Carl Sterns, news anchor for Channel 1. Thirty minutes ago, the notorious crime sy
HG is tangent to circle O at point W. WU is the circle's diameter. Find m/GWU. Answer Attempt 1 out of 2 m/GWU H W Submit Answer
Using front-end estimation, what is the correct estimation of the sum, 23+33+44+51+31 -A. 180B. 170C. 160D. 150
