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Answer:
B) 6 times
Step-by-step explanation:
54/9=6
For the 51-deg angle, y is the opposite leg, and 12 is the hypotenuse.
The trig ratio that relates the opposite leg and the hypotenuse is the sine.
sin A = opp/hyp
sin 51 deg = y/12
y = 12 * sin 51 deg
y = 9.3
Assuming your unit is in hours.
2/3 + 1/2 + 3/4 + 5/6
= 8/12 + 6/12 + 9/12 + 10/12
= 33/12
=
2 hours or 2 hours 45 mins