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sukhopar [10]
3 years ago
9

A parallelogram has side lengths of 13 and 17 and an angle that measures 64°. Law of cosines: a2 = b2 + c2 – 2bccos(A) What is x

, the length of the diagonal, to the nearest whole number? 16 18 19 21
Mathematics
2 answers:
Ghella [55]3 years ago
7 0

Answer:

The correct answer for edge 2020 is 16 so the other answer on here is correct even tho it's reported

Step-by-step explanation:


asambeis [7]3 years ago
6 0
Given that the parallelogram has the dimensions given above, the value of x can be calculated using cosine rule as follows;
a^2=b^2+c^2-2bcCosA
thus;
x^2=13^2+17^2-2*13*17*cos 64
x^2=169+289-442cos64
x^2=458-193.76
x^2=264.24
thus;
x=sqrt264.24
x=16.2555
The answer is 16
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