The answer is a. here’s a picture that hopefully helps explain the reasoning/work
Which equation can be used to find the measure of angle LJK?
1 answer:
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Starting from the fundamental trigonometric equation, we have
Since , we know that the angle lies in the third quadrant, where both sine and cosine are negative. So, in this specific case, we have
Plugging the numbers, we have
Now, just recall that
to deduce