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britbrat4290

  • 2 years ago

Show that the equation is not an identity by finding a value of x for which both sides are defined but not equal. cos x - cos x sinx = cos3 x pi/4 or pi/2 ??????

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  1. Psymon
    • 2 years ago
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    cos(3x) or cos^3(x)?

  2. amistre64
    • 2 years ago
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    cospi/2 = 0 soo thats not it

  3. britbrat4290
    • 2 years ago
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    it would be 0... thank u

  4. amistre64
    • 2 years ago
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    now that depends on of its \(\cos^3x\) or \(\cos 3x\)

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