This is the good part of Trigonometry, actually measuring triangles. It's much better than all the identities around sine and cosine and the rest, which actually have more to do with circles than triangles.
This part of trig has a short menu:
Law of Cosines. Three ways to write it, one is 
Law of Sines: 
Triangle angles: 
and two special cases of the Law of Cosines, the Pythagorean Theorem
and the Collinear Points Theorem:
Here we choose Triangle Angles followed by Law of Sines:
A = 180 - 105 -15 = 60 degrees
Answer: 1.8 cm
When I was a student we'd be expected to get 
exactly and get
But that was before online homework.
Answer:
12y
Step-by-step explanation: 3(y4)
3×y×4 = 12y
Gghgghsjehebosfgwbnwiebqidbwbsb
An expression you could use:
x + 3
Answer:
Each Child get = 0.928 pounds of candy
Step-by-step explanation:
Total no of girls are 3
total no of boys are 4
Total no boys and girls are = 3 + 4
= 7
Now it is given that Mr Reese booth have some pound of candies and he wants to distribute it equally among each children
total candy Mr Reese have is 
Now converting it to proper fraction
=
= 
Now the amount of candy have =
Now we have to divide it into 7 kids
so
each kid get = total candy / total children
=÷7
Changing the divide sign to multiplication
Which becomes
solving it gives
Each Child get = 0.928 pounds of candy
