Use a Calculator to Find the Acute Angle Between the Planes

question 29

Multiple Choice

Use a calculator to find the acute angle between the planes to the nearest thousandth of a radian.
-8x - 10y + 2z = -10 and -4x - 6y + 5z = -7

• A) 0.341 rad
• B) 1.230 rad
• C) 1.571 rad
• D) 0.459 rad

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