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Please help me and thank you!!
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Please help me and thank you!!

Please help me and thank you!!-example-1
User Mixer
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Subtract c^2 from a^2+b^2, on the left.

Next, enclose your result inside parentheses.

Next, place a " - " sign in front of this last expression.

This result is the value of 2abcos C.
User Soulprovidr
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