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SpyIntel [72]
2 years ago
11

Determine the length of side QR in the following triangle

Mathematics
1 answer:
Jobisdone [24]2 years ago
3 0

The length of the side QR in the task content can be determined as; 12.22cm.

<h3>What is the length of the third side QR?</h3>

It follows from the task content that 2 lengths and one included angle are given in the task content. It therefore follows that the length of side QR can be evaluated by the cosine rule as follows;

QR² = 13² + 4² - (2×4×13×cos70)

QR = √149.4

QR = 12.22cm

Read more on cosine rule;

brainly.com/question/23720007

#SPJ1

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