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qwerty1234321

  • 3 years ago

if sin x=.21 what is cos x?

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  1. muhammad9t5
    • 3 years ago
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    use sinx^x+cosx^+1=0

  2. muhammad9t5
    • 3 years ago
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    \[sinx^2+cosx^2+1=0\]

  3. qwerty1234321
    • 3 years ago
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    this is hard..im bad at trig

  4. qwerty1234321
    • 3 years ago
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    i dont get it..

  5. muhammad9t5
    • 3 years ago
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    \[cosx^2=1-sinx^2\] \[cosx^2=1-(0.21)^2\] \[cosx^2=1-0.0441\] \[cosx^2=0.9559\] take square root both sides \[cosx=0.977\]

  6. muhammad9t5
    • 3 years ago
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    do u understandd? if yes please click on best answer.

  7. qwerty1234321
    • 3 years ago
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    thankks:)

  8. qwerty1234321
    • 3 years ago
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    thankks:)

  9. muhammad9t5
    • 3 years ago
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    u r welcome always.

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