The total length of 3 boards was 21.35 m. If one board was 8.2 m long and another was 6.42 m long, how long was the third board?
2 answers:
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Answer:
take the answer on picture which I attached with your question
Recall the fundamental rule of trig:
So, there exists an angle such that
if and only if
Working out the numbers, we get
So, there doesn't exist a number such that