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solution if x=cosec A + cos A and y=cosec A-cos A then prove that (2/x+y)sqare+(x-y/2)sqare-1=0

2 answers

x+y = cscA+cosA+cscA-cosA = 2cscA
x-y = cscA+cosA-(cscA-cosA) = 2cosA

2/2cscA = sinA
2cosA/2 = cosA

All clear now?
a litre of orange fruit drink contains 22%orange juice.how many millilitres of orange juice must be added to produce a mixture containing 50% orange juice?
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