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CBSE Class 11-science Answered

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Asked by | 27 Aug, 2008, 09:24: PM
answered-by-expert 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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