रेखाओ y=mx+c तथाx/a+y/b=1 को x cos alpha...

रेखाओ `y=mx+c` तथा`x/a+y/b=1` को `x cos alpha + y sin alpha = p` के रूप में लिखिए की लंब की लम्बाई ज्ञात कीजिये ।

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