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linda

  • 5 years ago

cos2theta + sin^2theta =1

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  1. anonymous
    • 5 years ago
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    umm..yes, that is true was that the question?

  2. Linda
    • 5 years ago
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    yeah, i dont know how to solve it

  3. anonymous
    • 5 years ago
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    you dont solve it its an identity lol

  4. anonymous
    • 5 years ago
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    it's a rule you don't need to solve it. it's true

  5. anonymous
    • 5 years ago
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    or if you want a solution, then \[ \theta \in \mathbb{R} \]

  6. anonymous
    • 5 years ago
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    theta is any real number

  7. anonymous
    • 5 years ago
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    bit of a strange question , but yeh, thats probably what they were trying to get at , nevertheless and pretty bad question, the teacher wasnt thinking too hard when they made that

  8. anonymous
    • 5 years ago
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    elecengineer, take a look at michellej's question will you? trig id

  9. anonymous
    • 5 years ago
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    I know its an identity. but it holds ( solves ) for all real thetas I am not an idiot :|

  10. anonymous
    • 5 years ago
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    ???? i'm asking for help??? when did i call you an idiot..... i'm asking if you would look at michellej's question caz i don't get it...

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spraguer (Moderator)
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