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Which equation is not an identity? tan(–t) = –tan t tan t(csc t + cot t) = sec t + 1 sin tcot t = cos t cos2t − sin2t = –1
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Aug 5, 2017
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Which equation is not an identity?
tan(–t) = –tan t
tan t(csc t + cot t) = sec t + 1
sin tcot t = cos t
cos2t − sin2t = –1
Mathematics
high-school
Shreyas Shetty
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Shreyas Shetty
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Not 100% positive but i believe it is the third choice
Shubham Chahal
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Aug 8, 2017
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Shubham Chahal
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6
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Hey there,
Let t = 0 and you'd get 1 - 0 = -1 which is false
I would go for (D)
Lucas Ferreira
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Aug 11, 2017
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Lucas Ferreira
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