ABC is a right angled triangled, right angled at C and P is the length of the perpendicular from C on AB. If a, b and c are the length of the sides BC, CA and AB respectively, then

• ক 1p2=1b2−1a21p2=1b2−1a2 ✅ সঠিক উত্তর
• খ 1p2=1a2+1b21p2=1a2+1b2
• গ If a, b and c are the length of the sides BC, CA and AB respectively, then
• ঘ 1p2+1a2=−1b21p2+1a2=−1b2