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OpenStudy (anonymous):
Three security cameras are mounted at the corners of a triangluar parking lot. Camera 1 was 110 ft from camera 2, which was 137 ft from camera 3. Cameras 1 and 3 were 158 ft apart. Which camera had to cover the greatest angle? **Please help! I can't remember the formula!
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OpenStudy (anonymous):
Cosine rule: a^2=b^2+c^2-2bc cosA
OpenStudy (anonymous):
about 78.7
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