Answer:
D
Step-by-step explanation:
complementary means it equals 90
TU=AB since they are congruent figure. So AB=13
Correct answer is: distance from D to AB is 6cm
Solution:-
Let us assume E is the altitude drawn from D to AB.
Given that m∠ACB=120° and ABC is isosceles which means
m∠ABC=m∠BAC = 
And AC= BC
Let AC=BC=x
Then from ΔACD , cos(∠ACD) = 
Since DCB is a straight line m∠ACD+m∠ACB =180
m∠ACD = 180-m∠ACB = 60
Hence 

Now let us consider ΔBDE, sin(∠DBE) = 

20 watches are made since 385 = 15n + 85. 385 - 85 is 300 and 300 divides by 15 is 20.
Answer:
2/3
Step-by-step explanation: