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nalin [4]
3 years ago
14

Aughhhh i suck at this topic

Mathematics
1 answer:
NARA [144]3 years ago
6 0

Answer:

x = 18

Step-by-step explanation:

The given angle is a right-angled triangle.

Such triangles have an angle that equals 90°.

<em>The</em><em> </em><em>square</em><em> </em><em>attached</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>base</em><em> </em><em>represents</em><em> </em><em>9</em><em>0</em><em>°</em><em>.</em><em> </em><em>[</em><em>Whenever</em><em> </em><em>you</em><em> </em><em>such</em><em> </em><em>a</em><em> </em><em>square</em><em> </em><em>between</em><em> </em><em>two</em><em> </em><em>sides</em><em>,</em><em> </em><em>simply</em><em> </em><em>put</em><em> </em><em>the</em><em> </em><em>angle</em><em> </em><em>between</em><em> </em><em>those</em><em> </em><em>sides</em><em> </em><em>equal</em><em> </em><em>to</em><em> </em><em>9</em><em>0</em><em>.</em><em>]</em><em> </em>

So, the points we know about this triangle:

  • One angle is = 90
  • Another angle given in the question is 72°.

<em>*</em><em>Pro</em><em>p</em><em>erty</em><em>*</em>

The sum of all angles in a triangle = 180

==> 90 + 72 + x = 180

==> 162 + x = 180

==> x = 180 - 162

==> <u>x = 18</u>

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