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0 Solve 2x = 0 (first degree equation) (problem with solution) 0

0 Calculate (-1 + 3i)^2 [complex numbers – problem with solution] 0

0 First degree equation with solution (2x + 1 = 5 – x) 0

0 tangent 90 degrees exact value (dark mode) 0

0 cosine 90 degrees exact value (dark mode) 0

0 sine 90 degrees exact value (dark mode) 0

0 cosecant 0 exact value (dark mode) 0

0 secant 0 exact value (dark mode) 0

0 cotangent 0 exact value (dark mode) 0

0 tangent 0 exact value (dark mode) 0