Mathematics
posted by
Nina
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Solve the following equation for x, where 0 </ x 2(pi).
tan^2x=1

Mathematics 
maria
Convert → 4.2 g = ______ kg.

Mathematics 
Nina
Umm...what?

Mathematics 
MathMate
Solve the following equation for x, where 0 ≤ x < π
tan²x=1
Between 0 and π, tan π/4=1,
so what is x?