UPSC NDA 2 2019 Mathematics Solved Paper

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Question : 52 of 120

Marks: +1, -0

What is the angle between the lines x‌cos‌α+y‌sin‌α=a and x‌sin‌β−y‌cos‌β=a ?

[NDA II 2019]

β−α
π+β−α
(π+2β+2α)
2
(π−2β+2α)
2

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