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| 1. |
The acute angle between the two planes ` x + y + 2z` = 3 and 3x - 2y + 2z = 7 ` is …….A. `"cos"^(-1)((3)/(sqrt(102)))`B. `"cos"^(-1)((1)/(sqrt(102)))`C. `"cos"^(-1)((9)/(sqrt(102)))`D. `"cos"^(-1)((5)/(sqrt(102)))` |
| Answer» Correct Answer - D | |