if cosec theta =3 find the value of 2 cot^2 theta+2
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Answer: 7
Step-by-step explanation:
cosecθ=3/2
2(cosec²θ+cot²θ)
2(cosec²θ+cosec²θ-1) {cosec²θ=1+cot²θ]
2(2cosec²θ-1)
2(2(3/2)²-1)
2(2(9/4)-1)
2(9/2 -1)
2(7/2)
7
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