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x sec a+y cosec a =a andxcosalpha-ysin alpha=acos2alpha prove that4p^+q^=a^
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By Caroline

x sec a+y cosec a =a andxcosalpha-ysin alpha=acos2alpha prove that4p^+q^=a^
​

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Caroline

How do the three categories of municipal solid waste (compost, recycling and landfill) differ​

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a) Pollution of the ganga and ganga action plain​

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