Answer:
cosB = 2√6 / 7
Step-by-step explanation:
use the pythagorean theorem to find the missing side
a² + b² = c²
a² + 5² = 7²
a² + 25 = 49
a² = 24
a = √24
a = 2√6
--------------------------
cosB = adj/hyp
cosB = 2√6 / 7
Answer:
Step-by-step explanation:
its the first one in edge
0.03 i am thinking it is that because is 0.3 out of 10%
Uh we need to know the length of one of the edges of the bases
28.04996
Step-by-step explanation:
a² + b² = c²
(2x)² + x² = 62²
4x² + x² = 3844
5x² = 3844
x² = 3844÷5
x² = 768.8
x =
x = 28.04996
I hope this is right. Apologies if it is not.