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4 years ago

10

"PLEASE HELP!!!

1 answer:

Kitty [74]4 years ago

8 0

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

<span>x2</span>=<span>102</span>+<span>72 </span>= <span>14
</span><span>x= √149 = 12,2
</span><span>and for b-c diagonal
</span>
<span>y2</span>=<span>72</span>+<span>32</span>=<span>58
</span><span>y= √58 = 7,616
</span><span>and a-c
</span>
<span>z2</span>=12,<span>22</span>+7,<span>6162</span>=206,<span>84
</span>
z = √206,84 = 14,3
<span>so angle would be
</span>
<span>cosθ=7,616÷14,38
</span>θ = <span>58.19</span>

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