Mathematics, 22.08.2020 14:01 tatskuntz1
If cot^(4)x − cot^(2)x = 1, then the value of cos^(4)x + cos^(2)x is
Answers: 1
------- (1)
in the equation:
(Using the identity 
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If cot^(4)x − cot^(2)x = 1, then the value of cos^(4)x + cos^(2)x is...
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