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2 years ago

⚠️ HELP ⚠️

Mathematics

2 answers:

Alona [7]2 years ago

8 0

<h2>A = 63 degrees</h2><h2>B = 36 degrees</h2><h3></h3><h3>Since angle <em>a</em> is supplementary to the 117 degree angle, we subtract 117 from 180.</h3><h3></h3><h3>180 - 117 = <u>63</u></h3><h3><u></u></h3><h3>We use that information to calculate angle <em>b. </em>Since all angles in a triangle add up to 180 degrees, we add 81 and 63, and then subtract that sum from 180.</h3><h3></h3><h3>81 + 63 = 144</h3><h3>180 - 144 = <u>36</u></h3><h3><u></u></h3><h3><em>Please let me know if I am wrong.</em></h3>

Cloud [144]2 years ago

7 0

a=180-117=63

b=180-81-63=36

so angle a is 63, and angle b is 36

please mark brainliest

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By tangent secant theorem:

$m\angle 2 = \frac {1}{2} \times 3x\\\\\therefore m\angle 2 = \frac {1}{2} \times 120°\\\\\huge \purple {\boxed {\therefore m\angle 2 = 60°}}$

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