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Sariah Group Title

Use a coterminal angle to find the exact value of the expression. Do not use a calculator. Seleccione una respuesta. a. b. c. d.

  • 3 years ago
  • 3 years ago

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  1. saruz Group Title
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    are you spanish? and where is the question and options

    • 3 years ago
  2. Sariah Group Title
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    \[\cos405\]

    • 3 years ago
  3. saruz Group Title
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    cos405=cos(360+45)=cos45=1/root(2)

    • 3 years ago
  4. Sariah Group Title
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    to choose one answer

    • 3 years ago
  5. saruz Group Title
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    No tengo idea de ángulo coterminal ....... lo siento

    • 3 years ago
  6. saruz Group Title
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    but the answer i found is.707

    • 3 years ago
  7. ash2326 Group Title
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    co405=cos(360+45) cos (A+B)=cosAcosB-sinAsinB cos(360+45)=cos(360)cos(45)-sin(360)sin(45) cos360=1 sin360=0 sin45=cos45=1/sqrt(2) so cos405=1/sqrt(2) or 0.707

    • 3 years ago
  8. ash2326 Group Title
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    \[1/\sqrt(2)\]=1/1.414=0.707

    • 3 years ago
  9. saruz Group Title
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    but ash2326 , in options there is no .707

    • 3 years ago
  10. ash2326 Group Title
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    you wrote before that answer given is 0.707

    • 3 years ago
  11. Sariah Group Title
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    Use a coterminal angle to find the exact value of the expression. Do not use a calculator. \[\cos 405\]° Choose the rifht answer: |dw:1322555209852:dw|

    • 3 years ago
  12. ash2326 Group Title
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    sariah it's 1st option \[1/\sqrt(2) =\sqrt(2)/2\]

    • 3 years ago
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