Answer:
(a, b, c, d) = (101°, 79°, 83°, 97°)
Step-by-step explanation:
∠a is the supplement of the one marked 79°, so is ...
∠a = 180° -79°
∠a = 101°
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∠b is a corresponding angle to the one marked 79°, so is congruent to it.
∠b = 79°
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∠c is a vertical angle with the one marked 83°, so is congruent to it.
∠c = 83°
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∠d is a same-side interior angle between two parallel lines, so is supplementary to ∠c.
∠d = 180° -83°
∠d = 97°
Using Triangle sum theorem you add all the angles to make 180. So 47.7+51.1+<1=180
98.8+<1=180
-98.8 -98.8
<1= 81.2
If the problem want rational coefficient, then u need additional zero -1-√5 so you will expand a polynomial
(x+2)(x-2)²(x-1-√5)(x-1+√5). otherwise not necessary ie
(x+2)(x-2)²(x-1-√5).
Answer:
3rd one idrk hope it's right
