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Solve the trigonometric equation:
Make a substitution:
and the equation becomes
Rewrite conveniently – t as + t – 2t, and then factor the left-hand side by grouping:
Factor out 2t + 1:
Substitute back for t = cos x:
Therefore,
where k is an integer.
Solution set:
I hope this helps. =)
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Solve the trigonometric equation:
Make a substitution:
and the equation becomes
Rewrite conveniently – t as + t – 2t, and then factor the left-hand side by grouping:
Factor out 2t + 1:
Substitute back for t = cos x:
Therefore,
where k is an integer.
Solution set:
I hope this helps. =)