Question

If A={1,2,3}, fing A×A​

Answer 1

Step-by-step explanation:

We know the value of sin(60∘). Therefore the answer is −√32. Second Method: We can say that sin(5π3)=sin(300) since the value of π is 180∘.

Answer 2

Answer:

[(1,1)(1,2)(1,3)(2,1)(2,2)(2,3)(3,1)(3,2)(3,3)]