Verify the identity.(sin x)(tan x cos x - cot x cos x) = 1 - 2 cos 2 x
What will be an ideal response?
(sin x)(tan x cos x + cot x cos x) = sin x 
= sin 2 x - cos 2 x 
= 1 - 2 cos 2 x.
Mathematics
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Express as a single logarithm and, if possible, simplify.
ln 
- ln 6
A. ln 
B. ln 
C. ln 6
D. ln 
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What is the locus of points in a plane that are equidistant from parallel lines a and b?
What will be an ideal response?
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Solve the equation and express the solution in exact form.ln 2x + ln 9x = ln 19
A. {1}
B. {0}
C. 
D. 
Mathematics