CBSE Class 11-science Answered
Prove
Asked by | 27 Aug, 2008, 09:24: PM
Expert Answer
let y = (23+3)sinθ + 23cosθ
multiply and divide by a where a= ( (23+3)2 + (23)2 )1/2 = ( 33+123 )1/2
y = a ( ( (23+3)/ a)sinθ + (23/ a)cosθ )
= a sin(θ + b)
where sin b = (23/ a) and cos b = (23+3)/ a
so clearly y will vary between - a and a. since sin(θ + b) varies between -1 and 1
so i think there is some error in this question.
so please check and repost it.
Answered by | 12 Sep, 2008, 03:04: PM
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