Plane
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Question 14 (a) Important
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Question 14 (d) Important
Last updated at April 16, 2024 by Teachoo
Question 14 In the following cases, find the distance of each of the given points from the corresponding given plane. The distance of the point (x1, y1, z1) from the plane Ax + By + Cz = D is |(𝑨𝒙_𝟏 + 〖𝑩𝒚〗_𝟏 +〖 𝑪𝒛〗_𝟏 − 𝑫)/√(𝑨^𝟐 + 𝑩^𝟐 + 𝑪^𝟐 )| Given, the point is (2, 3, −5) So, 𝑥_1= 2, 𝑦_1= 3, 𝑧_1= −5 and the equation of the plane is 1x + 2y − 2z = 9 Comparing with Ax + By + Cz = D, A = 1, B = 2, C = −2, D = 9 Now, Distance of the point from the plane = |((1 × 2) + (2 × 3) + (−2 × −5) − 9)/√(1^2 + 2^2 + 〖(−2)〗^2 )| = |(2 + 6 + 10 − 9)/√(1 + 4 + 4)| = |(18 − 9)/√9| = 9/3 = 3