sin3/5=when tan square +sin.cos+cot
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tan=3÷4
sin=3÷5
cos=4÷5
cot=4÷3
= (3÷4)²+(3÷5)×(4÷5)+(4÷3)
= 9/16 +3/5 ×4/5 +4/3
= 9/16 +12/25 + 4/3
=(675 + 576 + 1600)/1200
= (2851)/1200
=2.4
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