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The image of the triangle is missing, so i have attached it.
Answer:
x = 26.2 cm
Step-by-step explanation:
To find the value of x, we will use cosine rule;
x² = 15² + 18² - 2(15 × 18)cos105
x² = 225 + 324 - 540(-0.2558)
x² = 549 + 138.132
x² = 687.132
x ≈ 26.2 cm
