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NotTim

  • 4 years ago

IF anyone is still awake: sin(7pi/12)+cos(pi/12)

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  1. NotTim
    • 4 years ago
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    I should know this, But erk.

  2. shinigami1m
    • 4 years ago
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    7pi/12*180/pi pi/12*180/pi cos 15 + sin 105

  3. NotTim
    • 4 years ago
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    Oops. Sorry. I did not clarify: Simplify the following. the final answer must be exact. However, it isn't necessary to rationalize the denominator.

  4. shinigami1m
    • 4 years ago
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    use angle identites for cos (45-30) and sin (60+45)

  5. NotTim
    • 4 years ago
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    Sorry. I don't understand....

  6. shinigami1m
    • 4 years ago
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    sincos sincos cos cos sin sin??

  7. NotTim
    • 4 years ago
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    Oh.

  8. Ishaan94
    • 4 years ago
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    NotHello NotTim, sin(7pi/12) + cos(pi/12) cos(pi/2 + pi/12) + cos (pi/2)

  9. Ishaan94
    • 4 years ago
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    NotSorry, sin(pi/2 + pi/12) + cos(pi/2)

  10. NotTim
    • 4 years ago
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    Er, I still don't understand...

  11. NotTim
    • 4 years ago
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    Wait. So am I doing the addition formula for both of them?

  12. NotTim
    • 4 years ago
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    In that, I break both of them up?

  13. Ishaan94
    • 4 years ago
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    Don;t do it my way, it's only gonna make it more complicated I thought I would be able to reduce it to Zero but Zero isn't the answer... shinigam1m is right!

  14. Ishaan94
    • 4 years ago
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    sin(105) + cos(15) sin(60 + 45) + cos(45 - 30) sin60cos45 + sin45cos60 + cos45cos30 + sin45sin30

  15. NotTim
    • 4 years ago
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    I think I m suppose to keep it in radians.

  16. Ishaan94
    • 4 years ago
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    keep it in radians then 45 = pi/4, 60 = pi/3 and 30=pi/6

  17. Lili_Perez
    • 4 years ago
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    i changed my picture

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