Use a Calculator to Find the Acute Angle Between the Planes

question 154

Multiple Choice

Use a calculator to find the acute angle between the planes to the nearest thousandth of a radian.
-8x + 4y + 3z = 1 and 7x + 10y + 7z = -6

• A) 1.079 rad
• B) 0.492 rad
• C) 1.534 rad
• D) 1.458 rad

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