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jok3333 [9.3K]
3 years ago
15

Suppose a triangle has two sides of length 2 and 3 and that the angle between these two sides is 60°. What is the length of the

third side of the triangle?
A. /3
B. /7
C. 2 /3
D. 2

Mathematics
2 answers:
uranmaximum [27]3 years ago
5 0

Answer:

\text{The length of third side is }\sqrt7 units

Step-by-step explanation:

Given that a triangle has two sides of length 2 and 3 and that the angle between these two sides is 60°.

Let b=2 units and c=3 units

we have to find the length of the third side of the triangle.

By law of cosines

a^2=b^2+c^2-2bc\cosA

where A is the angle between the side b and c

a^2=2^2+3^2-2(2)(3)\cos60

a^2=4+9-6=7

a=\pm\sqrt7

Length cannot be negative

∴ a=\sqrt7 units

Option B is correct.

krok68 [10]3 years ago
4 0
There is a photo with equations and the answer.

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