Solution

prove

Solution

Solution steps
Manipulating left side
Use the negative angle identity:
Use the negative angle identity:
Simplify
Rewrite using trig identities
Use the Double Angle identity:
We showed that the two sides could take the same form

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Frequently Asked Questions (FAQ)

  • Is 4sin(-x)cos(-x)=-2sin(2x) ?

    The answer to whether 4sin(-x)cos(-x)=-2sin(2x) is True