Question

If sinA = √3
/2, find the value of 2 cot²-1.​

Answer 1

Answer:

-1/3

Step-by-step explanation:

1. sinA=√3/2
2. sinA=sin60°
3. A=60°

therefore

1. 2cot²60°-1
2. 2(1/3)-1
3. 2/3-1
4. -1/3

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