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Sagot :
Answer:
156°
Step-by-step explanation:
To solve this problem, we first use the relation
15x + 9 = 9x + 15, on collecting like terms, we have
15x - 9x = 15 - 9
6x = 6
x = 1
And if x is equal to 1, then the base angles are 15 + 9 which is 24°.
And finally, to find k, we subtract the calculated angle from 180 and thus
180 - 24 = 156°
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