Answer:
- 10.5cm,20.8cm,23.3cm — yes
- 6cm, 22.9cm,20.1cm — no
Step-by-step explanation:
If the sides form a right triangle, the sum of the squares of the shorter two sides will equal the square of the longest side.
1. 10.5^2 + 20.8^2 = 23.3^2 . . . . . true algebraic statement; right triangle
__
2. 6^2 +20.1^2 = 440.01 ≠ 22.9^2 = 524.41 . . . . . this is an obtuse triangle
Answer:
152.9 ft
Step-by-step explanation:
14*8=112
8*4=32
112+32+8.9=152.9
Recall that

where
is the angle between the vectors
whose magnitudes are
, respectively.
We have


It is -3/2, 2/10 - 5/8 = -3/2