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**brumby_3** Find all sides and angles to the triangle ABC with C a right angle, a=6 and b=4.

I've found c using pythagorus theorm and the answer is 7.21

So I'm trying to find B, and I've done Sin(B)=4/c=4/7.21=0.5547

And so I've pressed the inverse button on my calculator and it keeps giving me the answer 37.439 when the answer should be 33.69... I've already tried an online calculator and it gives me the same answer as I've got on my calculator, and I know the answer is wrong, but how do I get the right answer?