3 years ago

Square root of 64+49-2(8)(7)cos32

Mathematics

1 answer:

gizmo_the_mogwai [7]3 years ago

8 0

Answer:

+4.245

Step-by-step explanation:

Before you can find the square root of x^2, you have to EVALUATE

64+49-2(8)(7)cos32, and THEN take the square root of the result:

64+49-2(8)(7)cos32 = 64 + 49 - 112(0.848) = 113 - 94.981 = 18.019

Then x^2 = 18.019.

Find the square root of 18.019: It is +4.245. A negative result here would make no sense.

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