You need the Law of Cosines here and you use it when you have 2 sides and an enclosed angle. The side across from the angle is the one we are looking for. The correct way to express the Law using what we have is the last choice above. Side RT is the unknown, and it is across from the angle that is enclosed between the 2 other sides.
Step-by-step explanation:
8⁴.... I hope it's correct
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Answer:
The length of each edge of the cube is 1 unit.
Step-by-step explanation:
Volume of the cube = x * x * x = x^3
So x^3 = 1
x = 1.
∠6 is vertical to ∠5 and ∠7 is vertical to ∠8. If ∠6=∠7 then ∠5=∠8
