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use an algebraically method each side of the equation to determine whether the equation is an identity.

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(a). The equation is .

asked Mar 5, 2014 in TRIGONOMETRY by futai Scholar

1 Answer

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The equation is .

The left side is more complicated, so start with it.

Write left side of equation is

So, the trigonometric identity is verified.

The trigonometric identity is verified.

answered Mar 6, 2014 by rob Pupil

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