(calculus) please help! will mark brainliest!
2 answers:
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Answer:
Step-by-step explanation:
we know that
The diameter divide a circle into two equal parts
so
The measure of arc FAC is equal to 180 degrees (Remember that a complete circle subtends a central angle of 360 degrees)
we have that
---> given problem
----> by central angle
----> given problem
so
therefore
----> by angle addition postulate
substitute