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3 years ago

What is the value of z?

Mathematics

2 answers:

Alona [7]3 years ago

6 0

Z=56°
explanation: since the one angle is 90°, you need to take 68 away from 90, you get 22. then since the line between angle 78° and y, would add up to 120°, you must take 78° away from 120°, giving you 42 for angle y. now for 3-sided triangles, their 3 angles add up to 120°, so add 42 and 22, you get 64, and finally take 64 away from 120 and you get angle z, which is 56°

OLga [1]3 years ago

3 0

Answer:

z = 86

Explanation:

90 - 68 = 12
180 - 78 = 102
102 + 12 = 114
180 - 114 = 86

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1 year ago

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3 years ago

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4 years ago

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Svetach [21]

Answer:

47.45754235

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Hey do you need to show your work for these? I found an answer key

Step-by-step explanation:

We need to use law of cosines

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plugging in what we have the equation looks like

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b.)

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3 years ago