Answer:
a^2-1
Step-by-step explanation:
(a+1)(a-1)
=a^2-1
Step-by-step explanation:
every triangle inscribed into a circle with the baseline being a diameter of the circle must be a right-angled triangle.
therefore,
angle XVY = 90°.
for VY we can use Pythagoras
c² = a² + b²
with c being the Hypotenuse (the line opposite of the 90° angle, in our case XY).
XY = 2×ZY = 2×17 = 34.
so,
34² = 30² + VY²
VY² = 34² - 30² = 1156 - 900 = 256
VY = 16
Answer:
b
Step-by-step explanation:
Answer:
the first one
Step-by-step explanation:
22.46 MB + 13.312 MB + 11.7 MB = 47.472 MB
Answer:
Answer:
1632 cm³
Step-by-step explanation:
½(12×8)×34
= 1632
Step-by-step explanation: