Answer:
83
Step-by-step explanation:
The sum of the angles of a triangle is 180
x + 2x+1 + x+ 15 = 180
Combine like terms
4x+16 = 180
Subtract 16 from each side
4x+16-16 = 180-16
4x = 164
Divide by 4
4x/4 = 164/4
x = 41
The angles are
x=41
x+15 = 41+15 = 56
2x+1 = 2*41+1 = 82+1 = 83
The largest angle is 83
Option (D) : 83
We know that,
(2x + 1) + x + (x +15) = 180°
4x + 16 = 180°
<u>X = 41°</u>
<u>Largest</u><u> </u><u>angle</u><u> </u><u>in</u><u> </u><u>triangle</u><u> </u><u>=</u><u> </u><u>83</u>
.375 and 6/16
Use the angle difference formula for cosine.
cos(α − β) = cos α cos β + sin α sin β
cos(180° − θ) = cos 180° cos θ + sin 180° sin θ
cos(180° − θ) = (-1) cos θ + (0) sin θ
cos(180° − θ) = -cos θ
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wrryetryytrwertry (It was too short)
radians.