cos A=3-5 then find the value of cosec A
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if cos A is 3/5i.e., adj/hypotenuse
then from Pythagoras theorem opp square+adj square=hyp square
therefore the third side is 4 =opp side
cosec A=hyp/opp=5/4
then from Pythagoras theorem opp square+adj square=hyp square
therefore the third side is 4 =opp side
cosec A=hyp/opp=5/4
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