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Question

Assertion :Statement 1: The number of solution of n|sinx|=m|cosx| (wherem,n,ϵZ) in [0,2π] is independent of m and n Reason: Statement 2: Multiplying trigonometric function by a constant changes only the range of the function but period remains the same.

A
if both the statements are TRUE and STATEMENT 2 is the correct explanation of STATEMENT 1
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B
if both the statements are TRUE and STATEMENT 2 is NOT the correct explanation of STATEMENT 1
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C
if STATEMENT 1 is TRUE and STATEMENT 2 is FALSE
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D
if STATEMENT 1 is FALSE and STATEMENT 2 is TRUE
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Solution

The correct option is A if both the statements are TRUE and STATEMENT 2 is the correct explanation of STATEMENT 1

n|sin(x)|=m|cos(x)|
nm=|cot(x)|
Or
mn=|tan(x)|
Or
tan(x)=mn
Hence
x=tan1(mn) and x=π+tan1(mn).
And
tan(x)=mn
Hence
x=tan1(mn) and x=πtan1(mn).
Now if n,m0 we therefore get 4 solutions in the interval of [0,2π] independent of the values of m and n.


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