If sinA =2/5, find the value of 4+4cot^2A
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if sin A=2/5
then cot A=√21/2
then 4+4(√21/2)^2
4+84/4
4+21
25
please make me the brainliest one
then cot A=√21/2
then 4+4(√21/2)^2
4+84/4
4+21
25
please make me the brainliest one
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