Trigno in probablity

The probablity that sin^-1sinx+cos^-1cosy is an unteger where x,y Îµ {1,2,3,4}

4 Answers

where is y?

i think its a typo
the correct question would be

sin^-1sinx+cos^-1cosy

this is my guess

yup philip......

Eureka.. try taking different cases

0 to pi/2

then

pi/2 to pi

then

pi to 3pi/2

and

3pi/2 to 2pi

For both you terms will get something in the form of x and y

Now you can take these toegether and see when the pi terms cancel out!

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