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Ronch [10]
3 years ago
11

If (tan^3 theta -1) / (tan theta - 1) - sec^2 theta +1 = 0, find cot theta.

Mathematics
2 answers:
stiv31 [10]3 years ago
7 0
Hey there !

Check the attachment.
Hope it helps you :)

anzhelika [568]3 years ago
3 0

Answer:

Option A. cot\theta = -1

Step-by-step explanation:

\frac{tan^{3}\theta -1}{tan\theta -1}-sec^{2}\theta +1=0

we have to the value of cot\theta

We further solve the equation

\frac{(tan\theta -1)(tan^{2}\theta +1+tan\theta )}{(tan\theta -1)}-sec^{2}\theta+1=0         [a³- b³= (a-b)(a² + b²+ ab)]

sec^{2}\theta +tan\theta -sec^{2}\theta +1=tan\theta +1=0

\frac{1}{cot\theta }=-1

cot\theta = -1

Therefore Option A. cot\theta = -1 is the answer.

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