if sin a=7/25 then cosec a-cot a/cosec a+cot a =
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Answer:
-1
Step-by-step explanation:
sin a= perpendicular/hypotenuse=7/25
=cosec a=1/sin a=25/7
by Pythagoras theorem,
=25²-7²
=625-49
=576
now,
tan a=perpendicular/base=7/24
=cot a=1/tan a=24/7
cot²a-cosec²a
=(24/7) ²-(25/7) ²
576/49-625/49
=-49/49
=-1
coa a=base/hypotenuse=24/25
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