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Sbdenney

  • 3 years ago

imranmeah91 HELP PLEASE! im stuck Solve 4cos2A = 3cosA for 90º≤A≤180º. (Enter only the number.) PLEASE I NEED IT

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  1. imranmeah91
    • 3 years ago
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    4cos2A = 3cosA

  2. imranmeah91
    • 3 years ago
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    cos 2A= 3/4 cos A

  3. imranmeah91
    • 3 years ago
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    Use double angle iden

  4. Sbdenney
    • 3 years ago
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    its Cos^2

  5. Sbdenney
    • 3 years ago
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    what?

  6. Sbdenney
    • 3 years ago
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    4cos^2A = 3cosA

  7. Sbdenney
    • 3 years ago
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    um ok

  8. imranmeah91
    • 3 years ago
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    Does it say anything about solve by hand, b/c it not that easy

  9. Sbdenney
    • 3 years ago
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    no its doesn't. theres no answers either

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