Answer:
angle CBE=15 degrees
Step-by-step explanation:
angle ECD is 60 degrees and EC=CD because equilateral triangle
angle DCB is 90 degrees and CB=CD because square
angle ECD +angle DCB= angle ECB
60+90=150=angle ECB
since triangle ECB has legs EC and CB equal in length, then it is an isosceles triangle.
so angles CBB and CBE are equal
angle CBE=(180-150)/2
angle CBE=15 degrees
I would say it is 248,700
Answer:
work done against friction: (a) if a body is moved horizontally against the frictional force this type of work is work done against friction.
(b) for example sliding a box and rolling a drum
work done against gravity: (a) if a body is moved vertically upwards against the gravity of the earth, this type of work is work done against gravity
(b) for example lifting and throwing of a body upward
Step-by-step explanation:
hope it's helpful
Answer:
61
Step-by-step explanation:
all angles of a triangle adds up to 180
180-77-42=61
You’re final answer would be 15/7 as an improper fraction or 2 and 1/7 as a mixed number.
