Answer the question in the attachment.
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Answered by
26
sol:-
tan α = -1
note: {cosβ - sinβ = 0 => cosβ = sinβ => •°• tanβ = 1
but, tanβ = -1/2010
•°• cosβ - sinβ is not equal to 0}
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2010tanβ + 1 = 0 is very much Required
To cancel Cosb - Sinb from numerator & denominator u need to show that cosb - sinb is not equal to 0
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Hello Mate !!!!
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