What is 9+10+10000000000000000+200000000000 0000000+999999999999999999999999999 99999999999999999

What basic trigonometric identity would you use to verify that csc x sec x cot x = csc^(2)x

Convert 2000 swiss francs to dutch guilders

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol