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2 sec2 x − 2 sec x = 4

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2 sec² x − 2 sec x = 4

Guest Jul 17, 2014

Best Answer

+33654

+5

Write this as 2sec²x - 2secx - 4 = 0

This factors as 2(secx + 1)(secx - 2) = 0

So secx = -1 and secx = 2

Given that sec = 1/cos, can you take it from here?

Alan Jul 17, 2014

1⁺⁰ Answers

+33654

+5

Best Answer

Write this as 2sec²x - 2secx - 4 = 0

This factors as 2(secx + 1)(secx - 2) = 0

So secx = -1 and secx = 2

Given that sec = 1/cos, can you take it from here?

Alan Jul 17, 2014

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