cos (X) + sin (X) = 0
Subtract cos(x) from each side:
sin(x) = -cos(x)
Divide each side by cos(x) :
sin(x) / cos(x) = -1
But sin/cos = tangent
tan(x) = -1
x = 135° and 315°
x = 3/4 pi radians and 7/4 pi radians
To solve cos X + sin X = 0 , we find that tan X = − 1 . The principal solutions are X = 4 3 π and X = 4 7 π . The general solutions can be expressed as X = 4 3 π + nπ and X = 4 7 π + nπ for any integer n .
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DiketahuiAda 4 kotakTiap kotak berisi 6 permenDitanyaBanyak permen seluruhnyaDijawab[tex] = 4 \times 6 \\ = 24[/tex]KesimpulanMaka jawabannya 24.