Tuesday

July 22, 2014

July 22, 2014

Posted by **Anonymous** on Thursday, July 26, 2012 at 6:58pm.

what is sec^-1 (sec-ð)?

- Trigonometry -
**Reiny**, Thursday, July 26, 2012 at 11:44pmmake a sketch of their graphs and see where they intersect.

Here is one of the best websites for graphing ...

http://rechneronline.de/function-graphs/

enter:

x for the first graph

tan(x) for the second graph

change "Range x-axis from" -20 to 20

change "Range y-axis from" -50 to 50

As you can see there will be an infinite number of solutions

the obvious one is x=0

the next one is

another is appr 10.904

check:

y = x = 10.904

y = tan(10.904) = 10.9

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