c^2 = a^2 + b^2 - 2*ab*Cos(C)
c = 16; a = 17; b = 8 (what you call a and b don't really matter. c does). Substitute.
16^2 = 17^2 + 8^2 - 2*17*8*Cos(C) Add the first 2 on the right.
256 = 289 + 64 - 282*cos(C)
256 = 353 - 282*cos(C)
Whatever you do, don't do any more combing on the right side. Subtract 353 from both sides.
-97 = -282 * cos(C )
Divide by 282
0.34397 = cos(C)
cos-1(0.34397) = C ; C = 69.88 degrees.
Do you need more help on this question? All of these are done the same way.
Answer:
Myra: 24.8s (winner)
Byron: 26.3s
Step-by-step explanation:
Myra knocked down 1, so therefore there are 2 points added onto her time and it is now 24.8s.
Byron knocked down 3, so there are 6 points added on for 2 seconds per each hurdle. His time is now 26.3
The first one
2,6,8,3,7,9,4,9,8,7,3,2,8,11,3
Answer:
option: B is correct
A reflection across line n followed by a 270° rotation about point P.
Step-by-step explanation:
Clearly from the figure we could see that the graph is first reflected across the given line n such that we obtain the figure R'S'T'V'U' and then it is rotated 270° across the point P so that we obtain the figure R"S"T"U"V".
Hence, option B is correct.
( A reflection across line n followed by a 270° rotation about point P )
Answer:
Around 175.80
Step-by-step explanation:
732/178 + 167 - 642/137 =
366/89 + 167 - 642/137
4 10/89 +167 - 642/137
8.80 +167
175.80
