Trigo

1. Cos(a+b)=
   • Cos(a)cos(b) - sin(a)sin(b)
   • Cos(a)cos(b) + sin(a)sin(b)
   • Sin(a)cos(b) - cos(a)sin(b)
   • Sin(a)cos(b) + cos(a)sin(b)
2. Cos(π/2+x)=
   • -cos(x)
   • -sin(x)
   • Cos(x)
   • Sin(x)
3. Sin(-x)=
   • -cos(x)
   • -sin(x)
   • Cos(x)
   • Sin(x)
4. Cos(π-x)=
   • -Cos(x)
   • Cos(x)
   • -sin(x)
   • Sin(x)
5. Cos(a-b)=
   • Cos(a)cos(b) - sin(a)sin(b)
   • Sin(a)cos(b) + cos(a)sin(b)
   • Cos(a)cos(b) + sin(a)sin(b)
   • Sin(a)cos(b) - cos(a)sin(b)
6. Cos(2a)=
   • Cos²(a) - sin²(a)
   • 2cos²(a)
   • 2sin²(a)+cos²(a)
   • 2sin(a)cos(a)
7. Sin(a+b)=
   • Sin(a)cos(b) - cos(a)sin(b)
   • Cos(a)cos(b) + sin(a)sin(b)
   • Cos(a)cos(b) - sin(a)sin(b)
   • Sin(a)cos(b)+cos(a)sin(b)
8. Sin(a-b)=
   • Cos(a)cos(b) + sin(a)sin(b)
   • Sin(a)cos(b) + cos(a)sin(b)
   • Cos(a)cos(b) - sin(a)sin(b)
   • Sin(a)cos(b) - cos(a)sin(b)
9. Sin(π+x)=
   • -cos(x)
   • Cos(x)
   • Sin(x)
   • -sin(x)
10. Cos(-x)=
    • Sin(x)
    • Cos(x)
    • -cos(x)
    • -sin(x)
11. Cos(π/2-x)
    • Cos(x)
    • -cos(x)
    • -sin(x)
    • Sin(x)
12. Sin(π/2+x)=
    • Cos(x)
    • -sin(x)
    • -cos(x)
    • Sin(x)
13. Sin(2a)=
    • 2sin(a)-2cos(a)
    • 2sin²(a)
    • 2sin(a)cos(a)
    • 2cos²(a)
14. Cos²(a)=
    • (1+sin(2a))/2
    • (1-sin(2a))/2
    • (1-cos(2a))/2
    • (1+cos(2a))/2
15. Sin(π/2-x)=
    • -sin(x)
    • Cos(x)
    • -cos(x)
    • Sin(x)
16. Sin²(a)=
    • (1+cos(2a))/2
    • (1-cos(2a))/2
    • (1+sin(2a))/2
    • (1-sin(2a))/2

• Laget 04/12/2020
• Publisert 04/12/2020
• Endret 04/12/2020
• Vanskelighetsgrad Gjennomsnittlig
• Spørsmål 16
• Tema Scientific

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