Answer:
41.4
Step-by-step explanation: Since this isn't a right triangle and you're given side side side (SSS), you need the Law of Cosines.
cos(c) = (a^2 + b^2 - c^2)/2ab
(100+144-64)/2*12*10
cos(c) = 180/240
multiply both sides of the equation by cos^-1 to get ride of cos:
cos^-1(cos(c)) = cos^-1(180/240)
c = 41.4
Answer:
All triangles are open figures.f (60-60-60)
All triangles have 3 sides that are equal in length.f(3,4,5)
Only some triangles have 1 right angle.t
All triangles are polygons.t
All triangles have 3 angles.t
Answer:
o
Step-by-step explanation:
17r-17r=0
Answer: 3 times the sum of r and d squared minus 2 times the sum of r and d squared
we write the statement in terms of expression
⇒3×(r+d)²-2×(r+d)²=y
→y=(r+d)²
Answer:
Definatley A
Step-by-step explanation:
