jorgearanda1895 jorgearanda1895
  • 12-12-2014
  • Mathematics
contestada

sinX/1-cosX+sinX/1+cosX

Respuesta :

maxinetoto maxinetoto
  • 12-12-2014
It looks like you're missing some parentheses.
I think this is the equation you mean:
sin(x)/(1-cos(x)) + sin(x)/(1+cos(x))
your common denominator is (1-cos(x))*(1+cos(x)), which is the difference of squares simplification and is equal to (1-cos^2(x)) = sin^2(x)
Numerator: sin(x)*(1+cos(x)) + sin(x)*(1-cos(x))
= sin(x) +sin(x)cos(x) + sin(x) - sin(x)cos(x)
= 2sin(x)
Answer: 2sin(x)/sin^2(x) = 2/sin(x) = 2csc(x)
Answer Link

Otras preguntas

X=5y.          y=10x+20 Help please
solve using elimination, 2x+5y=2   3x-5y=53
according to hamilton what are implied powers?A.powers not expressly forbidden in the constitutionB.powers that were forbidden in the constitutionC.powers that
A grade has 81 girls and 72 boys. The grade is spilt into groups that have the same ratio of boys to girls as the whole grade. How many girls are in a group tha
Describe how the Hawaiian Islands were formed and how they are evidence for mantle plumes.
what is 7/5 as a decimal number
what is 7/5 as a decimal number
3. The value of the expression 5.104 + 4.103 + 7.10 + 1 is equal to:
How do plant populations in a community change over time?
How do plant populations in a community change over time?