Question

evaluate 3sin^2 45 + 2cos^2 30 - cot^2 30​

Answer 1

Step-by-step explanation:

given

3sin^2 45 +2cos^2 30 -cot^2 30

sin45 =1/root2

cos30 =root3/2

cot30=root3

substitute in given equation

3(1/root2)^2 +2(root3/2)^2 -(root3)^2

3(1/2)+2(3/4)-(3)

3/2 +6/4 -3

3/2 +3/2 -3

6/2 -3

3-3=0

therefore 0 is answer obtained

Answer 2

Answer:

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Step-by-step explanation:

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