What is the best approximation of the length of segment Q R? Note tangent of open argument 80 degrees end argument is approximately equal to 5.56

What is the best approximation of the length of segment Q R? Note tangent of open argument 80 degrees end argument is approximately equal to 5.56

Its a Right triangle Q R S, with angle Q R S a right angle, side R S measuring 2cm and angle R S Q measuring 80 degrees.

Answers:

a. 9.12cm

b. 11.34cm

c. 12.61cm

d. 10.36cm