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Question

If tanθ + cotθ = x, where x is the least prime number and tanϕ + secϕ = a, where 0° < ϕ, θ < 90°, then the correct statement(s) is/are
Statement (I) : The value of sinϕ=a21a2+1 .
Statement (II) : The value of cosϕ(a+1a) is a prime number.
Statement (III) : The value of 13(sinθ+cosθ)=x.

यदि tanθ + cotθ = x, जहाँ x लघुत्तम अभाज्य संख्या है तथा tanϕ + secϕ = a, जहाँ 0° < ϕ, θ < 90°, तब सही कथन है/हैं
कथन (I) : sinϕ का मान = sinϕ=a21a2+1
कथन (II) : cosϕ(a+1a) का मान एक अभाज्य संख्या है।
कथन (III) : 13(sinθ+cosθ)का मान = x

A
Only statement (I) is correct
केवल कथन (I) सही है
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B
Only statement (I) and (II) are correct
केवल कथन (I) तथा (II) सही है
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C
Only statement (III) is correct
केवल कथन (III) सही है
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D
All three statements are correct
सभी तीनों कथन सही है
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Solution

The correct option is B Only statement (I) and (II) are correct
केवल कथन (I) तथा (II) सही है
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