標題:

maths

發問:

The straight line passing through P(3,7) and Q(-1,k) will make an inclination of 45 degree. Find the value of k. Plx steps by steps

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最佳解答:

The straight line passing through P(3,7) and Q(-1,k) will make an inclination of 45 degree. Find the value of k. tan45=slope of PQ 1=(k-7)/(-1-3) k-7=-4 k=11 2007-02-11 22:08:26 補充: k-7=-4k=3

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