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[MCQ] If tan πœƒ = 5/2 then (4 sin πœƒ + cos πœƒ) / (4 sinπœƒ − cosπœƒ) is - CBSE Class 10 Sample Paper for 2025 Boards - Maths Standard

part 2 - Question 6 - CBSE Class 10 Sample Paper for 2025 Boards - Maths Standard - Solutions of Sample Papers for Class 10 Boards - Class 10

 

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Question 6 If tanβ‘πœƒ=5/2 then (4 sinβ‘πœƒ+ cosβ‘πœƒ)/(4 sinβ‘πœƒβˆ’ cosβ‘πœƒ) is equal to (A) 11/9 (B) 3/2 (C) 9/11 (D) 4Given tan ΞΈ = πŸ“/𝟐 Now, (4 sinβ‘γ€–πœƒ + cosβ‘πœƒ γ€—)/(4 sinβ‘γ€–πœƒ βˆ’ cosβ‘πœƒ γ€— ) Dividing numerator and denominator by cos ΞΈ = (4 sinβ‘πœƒ/cosβ‘πœƒ + coπ‘ β‘πœƒ/cosβ‘πœƒ )/(4 sinβ‘πœƒ/cosβ‘πœƒ βˆ’ coπ‘ β‘πœƒ/cosβ‘πœƒ ) = (πŸ’ π­πšπ§β‘γ€–πœ½ + πŸγ€—)/(πŸ’ π­πšπ§β‘γ€–πœ½ βˆ’ πŸγ€— ) Putting tan ΞΈ = πŸ“/𝟐 = (4 Γ— 5/2 + 1)/(4 Γ— 5/2 βˆ’ 1) = (10 + 1)/(10 βˆ’ 1) = 𝟏𝟏/πŸ— So, the correct answer is (A)

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