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greysmither

  • 4 years ago

The equation sin(x)=√4/4 is an identity. T or F?

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  1. SUROJ
    • 4 years ago
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    false

  2. dpaInc
    • 4 years ago
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    no. an identity is a statement that is ALWAYS true no matter what x is. Here, if x = 0, the equation sin(0) = (sqrt2)/2 would be false.

  3. SUROJ
    • 4 years ago
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    sin^2x+cos^2x=1, like these rules are identities...the values of x can change so the answer is definitely false.

  4. greysmither
    • 4 years ago
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    OH! Okay, I get it now. Thanks to both of you :)

  5. dpaInc
    • 4 years ago
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    yw

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