Untitled-113 - Example Find the acute angle between a pair...

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Unformatted text preview: Example: Find the acute angle between a pair of straight lines with gradients —3 and 2. Solution: ml 2 —3, 2712 = 2 ”11—7712 tanQ 2 -——~————— 1+m1m2 _ —3—2 _ 1+(—3)(2) _ ;5 _ «5 =1 9: 45° Example: What is the acute angle between the lines x— 2 y = 6 and H 03 Solution: If x —2 y 1 If 4x—y II 4x—1 H x—3 y . so that m2 = 4. _l ___2_ 3 7 6 490 to the nearest degree ...
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