In the figure given below, AD = 4 cm, BD = 3 cm and CB = 12 cm, then cot ๐ equals
(a) 3/4 (b) 5/12 (c) 4/3 (d) 12/5
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Last updated at Sept. 8, 2021 by Teachoo
Transcript
Question 14 In the figure given below, AD = 4 cm, BD = 3 cm and CB = 12 cm, then cot ๐ equals (a) 3/4 (b) 5/12 (c) 4/3 (d) 12/5 To find cot ฮธ, We need to find AB In right ฮ ABD By Pythagoras theorem AB2 = AD2 + BD2 AB2 = 42 + 32 AB2 = 16 + 9 AB2 = 25 AB2 = 52 AB = 5 cm Now, tan ๐ = ๐ด๐ต/๐ต๐ถ tan ๐ = 5/12 Thus, cot ๐ = ๐๐/๐ So, the correct answer is (d)
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CBSE Class 10 Sample Paper for 2022 Boards - Maths Basic [MCQ]
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