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Author Topic: quick doubt in c3  (Read 815 times)

Offline 7ooD

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quick doubt in c3
« on: March 28, 2010, 02:13:22 pm »
write the following in simplest form involving only one trigonometric function

tanA/(sec^2A)-2

i tried to solve it as following

(sec^2A)=tan^2A+1

tan^2A+1-2

tan^2A-1

-(-tan^2+1)

tanA/-(-tan^2+1)

2tanA/-(-tan^2+1)

-2(1/2tan2A)

-tan2A

in the answers it says -1/2tan2a not -tan2a as i solved above wat did i do wrong



« Last Edit: March 28, 2010, 02:15:23 pm by 7ood »
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Offline Saladin

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Re: quick doubt in c3
« Reply #1 on: March 28, 2010, 03:45:26 pm »
there u go
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Offline 7ooD

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Re: quick doubt in c3
« Reply #2 on: March 28, 2010, 04:25:21 pm »
lol my mind stopped i couldn't complete the rest thx dude
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Offline Saladin

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Re: quick doubt in c3
« Reply #3 on: March 28, 2010, 05:08:46 pm »
here to help u all
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