Triangle is a 2- shape with three sides and angles. The value of x rounded to the nearest while number is 4
Application of cosine rule
Triangle is a 2- shape with three sides and angles. Using the cosine rule to determine the value of "x", we will have:
x² = 11² + 8² -2(11)(8)cos16
x² =121 + 64 - 176cos16
x² = 185 - 176cos16
x² = 15.81
x = 4
Hence the value of x rounded to the nearest while number is 4
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