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January 31, 2015

January 31, 2015

Posted by **lisa** on Tuesday, May 14, 2013 at 9:05am.

- trigonometry -
**Reiny**, Tuesday, May 14, 2013 at 9:35amIs it

tan (x/2) = tanx/secx + 1 ??

tan (x/2) = tanx/(secx +1) ??

(tanx)/2 = tanx/secx + 1 ?? ---> the way you typed

are we solving the equation, or is it supposed to be an identity?

Can you see why brackets are essential?

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