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dimaraw [331]
3 years ago
11

how do you do this? i don't need it solved i just don't know how to do it. i know the note on the side says how to but i'm still

confused

Mathematics
1 answer:
olchik [2.2K]3 years ago
5 0

Answer:

Perimeter of triangle J= 18.0 units (3 s.f.)

Perimeter of triangle K= 19.0 units (3 s.f.)

Step-by-step explanation:

The length of each side of the triangle can be found using the distance formula below:

\boxed{d=  \sqrt{(y1- y2)^{2} + (x1 - x2)^{2}  } }

Please see the attached pictures for full solution.

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Given:

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Then,

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Then,

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Final answer:

Hence, the value of the cos(105) is shown below:

cos(105^{\operatorname{\circ}})=-\frac{\sqrt{2-\sqrt{3}}}{2}

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