please solve this question.
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PLZZ mark it as brainliest...!! thanku
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amreenfatima78691:
thanks a lot for answering my question.
plzz maro as brailiest
brainliest*
Hello abhishekkumar10a.
can you please answer the question that I have posted.
please see the question and try to answer
I will mark brainliest if you answer that question.
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m = acos θ + bsin θ
n = asin θ - bcos θ
∵ m2 + n2 = a2cos2 θ + b2sin2 θ + 2absin θcos θ + a2sin2 θ + b2cos2 θ - 2absin θcos θ
= a2(sin2 θ + cos2 θ) + b2(sin2 θ + cos2 θ)
= a2 + b2
So, a2 + b2 = m2 + n2
n = asin θ - bcos θ
∵ m2 + n2 = a2cos2 θ + b2sin2 θ + 2absin θcos θ + a2sin2 θ + b2cos2 θ - 2absin θcos θ
= a2(sin2 θ + cos2 θ) + b2(sin2 θ + cos2 θ)
= a2 + b2
So, a2 + b2 = m2 + n2
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