What is tan(50)?

A. -5.88
B. -.57
C. 1.19
D. 2.36

What is sin(45)?

A. .71
B. .63
C. -1.25
D. -.25

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.