Question

If
sin a
=1/2
then
find
the value of a
2coseca/1+cot2a​

Answer 1

if sinA=1/3

Then 2cot²A+2

=2(cot²A+1)

=2cosec²A. [` . ` cot²A+1=cosec²A] =2(1/sinA)² [' . ' cosecA=1/sinA]

=2×3²/1

= 18

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