CBSE Class 10 Answered
If l sin ϴ + m cos ϴ + n = 0 and l’ sin ϴ + m’ cos ϴ + n’ = 0
Then prove that (mn’-m’n)² + (nl’ – ln’)² = (lm’-l’m)²
Asked by CHIDAMBAR | 23 May, 2018, 07:00: PM
Expert Answer
Answered by Arun | 24 May, 2018, 10:38: AM
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