Answer:
Step-by-step explanation:
That really easy Peary it’s not eieoruirbcbdkehbdbs shrine chdiej
Answer:
Solution given:
a = 12, b = 5, c = 9
We have
: a² = b² + c² – 2bc cos A
12²=5²+9²-2×5×9 cos A
12²-25-81=-90 cos A
cos A=38/-90
A=cos -1(-19/45)
<u>A=115</u>°
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Answer:vertical angle
Step-by-step explanation:
Answer:
6903
Step-by-step explanation:
Yes sure
Answer:
x = 47
Step-by-step explanation:
Every triangle's interior angles add up to 180°.
Let's make an equation.
x + 102 + 31 = 180
x + 133 = 180
x = 47