1.

Prove the following:(i) sin4 0 - cost 4 0 = sin2 0 - cos2 o​

Answer» ONG>Step-by-step EXPLANATION:

=sin⁴0-cos⁴0

=(sin²0+cos²0)(sin²0-cos²0)

=1(sin²0-cos²0)

=(sin²0-cos²0)



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