Select the correct answer. Consider this equation.
cos(0/)= - 2square root 5 over / 5
If 0/ is an angle in quadrant II, what is the value of sin(0/);
OA. 1/2
OB. -5square root over 5
OC. -1/2
OD. square root 5 over 5

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

We’re gonna need a picture to refer to in order to figure it out. try reposting your question with the picture included.