Answer
Step-by-step explanation:
chord makes or arc make 120° at the center.
sum of other two angles of triangle=180-120=60
because they are equal.
so each angle=60/2=30°
tangent line makes angle 90° with radius .
so 30+y=90
y=90-30=60°
Answer:

Step-by-step explanation:
From the question we are told that:
Radius 
Coupler 
Generally the equation for Stroke in a slider-crank Mechanism x is mathematically given by



Step-by-step explanation:
everything can be found in the picture
Answer:
1; y=3 2; y=3
Step-by-step explanation:
because you have to mines both of the x ones making the 5s 3 leaving y left