Verify the identity. Justify each step. (PLEASE SHOW YOUR WORK)
\[\frac{ \sec \theta }{ \csc \theta - \cot \theta } - \frac{ \sec \theta }{ \csc \theta +\cot \theta } = 2 \csc \theta \]
1st talke lcm and write the equation
I don't know how to do any of this
What is the LCM of 1/2 and 1/3
what does lcm mean?
Least common multiple
2 and 3?
LCM is csc^2 O - cot^2O
ok than what
After taking the lcm we get the common denominator nd then we can do addition nd subtraction in the numerators.
making it one fraction we get secO(csc^O + cot^2O) - secO(csc^2O - cot^2O) ----------------------------------------- csc^2 O - cot^2O = 2 secO cot^2O ----------- csc^2 O - cot^2O
ok than what?
After this ^ step convert all values in tems of sin and cos
now csc^2 O = 1 + cot^2 O so the denominator = 1 so we are left with 2 sec O cot^2 O
hmm might have slipped up somewhere cant get 2 csc O from that...
yea i see where i went wrong when making it into one fraction its ecO(cscO + cot O) - secO(csc O - cot O) ---------------------------------- csc^2 O - cot^2O
= 2sec O cot O = 2 *1 /cos O * ccos O / sin O = 2 csc O
the denominator csc^2 O - cot^2O = 1 because csc^2 O = 1 + cot^2 O substituting;- 1 + cot^2 O - cot^2 O = 1
|dw:1437256289490:dw||dw:1437257039901:dw|
Join our real-time social learning platform and learn together with your friends!