Verify the identity. cos20(1 tan20)=1 To verify the identity, start with the more complicated side and...

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Verify the identity. cos20(1 tan20)=1 To verify the identity, start with the more complicated side and transform it to look like the other side. Choose the correct transformations and transform the expression at each step. cos 20(1+ tan 2 0) = cos 2 2 = cos = 1 Apply a quotient identity. Apply a reciprocal identity. Apply the appropriate even-odd identity. Apply a Pythagorean identity. Divide out the common factor. Verify the identity. cos20(1 tan20)=1 To verify the identity, start with the more complicated side and transform it to look like the other side. Choose the correct transformations and transform the expression at each step. cos 20(1+ tan 2 0) = cos 2 2 = cos = 1 Apply a quotient identity. Apply a reciprocal identity. Apply the appropriate even-odd identity. Apply a Pythagorean identity. Divide out the common factor.