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2 years ago

11

The value of the expression 1-(sin^2y/[1 cos y]) ([1 cos y]/siny)-(sin y/[1-cos y])=????

1 answer:

Musya8 [376]2 years ago

8 0

<span>Use inductive reasoning</span>

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$t_7 =\frac{5}{729}$

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$t_n =ar^{n-1} \\\therefore t_7 =5\times \bigg(\frac{1}{3}\bigg) ^{7-1} \\\therefore t_7 =5\times \bigg(\frac{1}{3}\bigg) ^{6} \\\therefore t_7 =5\times \bigg(\frac{1}{3}\bigg) ^{6} \\\therefore t_7 =5\times \frac{1}{729}\\\\\huge\red{\boxed{\therefore t_7 =\frac{5}{729} }}$

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