Step-by-step explanation:
XY^2=8^2+15^2 ... (Theorem of Pythagoras)
XY^2=64+225
XY^2=289
XY=17 units
Therefore:
SinX=15/17
CosX=8/17
TanX=15/8
Answer:
The first one
Step-by-step explanation:
-6r+6 would be the answer
Answer:
$7.74
Step-by-step explanation:
0.75x46=34.5
0.52x63=32.76
34.5+32.76=67.26
75-67.26=7.74
Answer:
Step-by-step explanation:
(3/4)/(1/8)
(3/4)(8/1)
24/4
6 pieces of pipe
9514 1404 393
Answer:
C. 36√3 square units
Step-by-step explanation:
Your knowledge of special triangles tells you that height CD is ...
CD = 6√3
so the area is ...
A = 1/2bh
A = 1/2(12)(6√3) = 36√3 . . . . square units
_____
<em>Additional comment</em>
The 30°-60°-90° right triangle that is half an equilateral triangle has a short side equal to half the length of the long side. The Pythagorean theorem tells you that the middle-length side is √(2²-1²) = √3 times the shortest side. That is, the side length ratios in this "special" triangle are ...
1 : √3 : 2
This means the length DB is 12/2 = 6, and the length CD is 6√3.
