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Tring Identity (Discussion)
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- ANKIT PANDE
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ANKIT PANDE said – Sat, 20 Jun 2009 19:13:51 -0000 ( Link )
X=45, COSX IS NOT EQUAL TO 0, SINX IS NOT EQUAL TO+1&-1
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chandra_avinash said – Fri, 26 Jun 2009 13:43:27 -0000 ( Link )
@the_ahmad:
x can’t be equal to 90 or generally speaking x!= (180n + 90)
ankit proposed his solution thinking that you’ve written sin2(x) – but this can’t be, since the expression won’t be an identity in that case; it has to be [sin(x)]^2
where did you get stuck?
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Sureshbala said – Mon, 29 Jun 2009 08:41:06 -0000 ( Link )
From the given equality it is clear that Cos x cannot be equal to 0. Hence x cannot take 90. General value is of course 180n + 90
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