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Question 37 (ii) (ii) If DP = 50 cm and PE = 70 cm then find 𝑃𝑄/𝐸𝐹.Since Ξ” DPQ ~ Ξ” DEF And, we know that Sides of similar triangles are proportional Therefore, 𝑫𝑷/𝑫𝑬=𝑷𝑸/𝑬𝑭 Since we know DP and PE, putting DE = DP + PE 𝐷𝑃/(𝐷𝑃 + 𝑃𝐸)=𝑃𝑄/𝐸𝐹 Putting DP = 50 cm and PE = 70 cm 50/(50 + 70)=𝑃𝑄/𝐸𝐹 50/120=𝑃𝑄/𝐸𝐹 5/12=𝑃𝑄/𝐸𝐹 𝑷𝑸/𝑬𝑭=πŸ“/𝟏𝟐

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.