Which expression is equivalent to sin (pi/12)cos(7pi/12) -cos(pi/12)sin(7pi/12) ?
1 answer:
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<h2>Explanation:</h2>
We use an equation to say that two things are equal. An equation always has an equal sign "=". So an equation tells us that the left side is equal to the right side. In this case, we have the following equation:
So the only value that makes this equation to be true is 5, because:
For instance, let's choose another value, say, 8. So substituting: