louie8656
22.06.2019 •
Mathematics
Find the perimeter of each of the two noncongruent triangles where a = 15, b = 20, and a = 29°
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Ответ:
Answer with explanation:
Using Sine Rule for Congruence of Triangles
Using Angle Sum Property of Triangle
⇒∠A+∠B+∠C=180°
⇒29°+41°+∠C=180°
⇒∠C=180°-70°
⇒∠C=110°
→Again Using Sine Rule
Length of third Side =28.92 unit
So,Perimeter of Triangle
=Sum of sides of triangle
=a +b +c
=15 + 20 +28.92
= 63.92 unit
Ответ:
Angle Y will be 90 degrees