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2 answers

sec^2 x = tan^2 x + 1
tan^2 x + 1 = tan^2 x + x
x = 1

2007-11-29 07:37:34 · answer #1 · answered by UnknownD 6 · 3 0

Use sec² x = tan² x + 1
Then tan² x + 1 = tan² x + x,
so x = 1.

2007-11-29 15:47:41 · answer #2 · answered by steiner1745 7 · 2 0

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