To find the straight line distance from A to B, use the Pythagorean Theorem: AC2 + CB2 = AB2 ---> 412 + 342 = ab2
---> 2837 = AB2 ---> AB = 53.3
Walking from A to C to B = 41 + 34 = 75 meters.
Walking from A to B will save you 75 - 53.3 = 21.7 meters.
y = r sin theta
sin theta = y/r
r sin theta = 4 Substituting for sin theta:-
r * (y/r) = 4
y = 4 is the answer
Answer: 12a-a (hope this helps :)
=12a-1a
=12a+-1a
=a+a+a+a+a+a+a+a+
=a+a+a+a+a+a+a+a+
=11A