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Raj S.'s Resources

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Dear Soriya,   I will not go through answer, instead I will talk on how the input data is interpreted.   A compiler on Calculator device or on computer's calculator will consider  "tan35/65" as "( tan(35) )/ 65" as no brackets provided in input...

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sin(x-y) = sin(x) * cos(y) - cos(x) * sin(y) > The theroem of the broken chord leads us to the trig identity above   =  { (7 / 25) * (4 / 5) } - { (24 / 25) - (3 / 5) } = {28 / 125} - {72 / 125} = -44 / 125   In trigonometry, using the right formula at right...