<span>Given cotA + cotB + cotC = sqrt3
to prove triangle ABC is equilateral
we prove this by assuming ABC to be equialteral and establishing the truth
of the statement cotA + cotB + cotC =sqrt3
since ABC is equialteral angleA=angleB=angleC=60 degrees
cotA=cotB=CotC = cot60= 1/sqrt3
therefore cotA + cotB + cotC = 1/sqrt3 + 1/sqrt3 + 1/sqrt3
=3/sqrt3
=sqrt3 which is equal to the RHS ( right hand side) of the expression
hence our assumption that ABC is equilateral is true</span>
Answer:
Step-by-step explanation:
Answer:
7.002
Step-by-step explanation:
thousandths place is the 3rd from the decimal
Answer: Hence, Option 'A' is correct.
Step-by-step explanation:
since we have given that
Cost of per cans = $0.90
Let number of cans of Tuna be n
so, Total cost of n cans be
Amount of coupon Tuna get off on total purchase = $0.40
So, According to question,
Hence, Option 'A' is correct.
