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#1 2014-01-25 21:19:21

niharika_kumar
Member
From: Numeraland
Registered: 2013-02-12
Posts: 1,028

trigonometry#2

if

then, find the value of

.


friendship is tan 90°.

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#2 2014-01-25 23:59:12

bob bundy
Moderator
Registered: 2010-06-20
Posts: 6,536

Re: trigonometry#2

hi

So

Note that 24 and 7 are the smaller two of a Pythagorean triple (like 3,4,5) so you can draw a right angled triangle with alpha in it and hence you can express any of the trig ratios using these numbers.

Bob


You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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#3 2014-01-27 03:51:31

niharika_kumar
Member
From: Numeraland
Registered: 2013-02-12
Posts: 1,028

Re: trigonometry#2

the answer is 2, right?
I don't know what went wrong while i was making it because the question was quite simple.:)
It happens many times with me that i am able to solve the questions which other students find difficult but in a simple question, i go wrong.


friendship is tan 90°.

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#4 2014-01-27 04:06:47

bob bundy
Moderator
Registered: 2010-06-20
Posts: 6,536

Re: trigonometry#2

hi Niharika,

Oh!  You actually want me to work it out as well.  eek

But that means working with actual numbers.

Oh, OK.  As it's for you I'll do it.

.........................................

.........................................

.........................................

Yes, I make it 2 too.  smile

Bob


You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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#5 2014-01-27 04:46:11

niharika_kumar
Member
From: Numeraland
Registered: 2013-02-12
Posts: 1,028

Re: trigonometry#2

thanks smile


friendship is tan 90°.

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