JEE Math Practice Question
The acute angle between the planes P1 and P2, when P1 and P2 are the planes passing through the intersection of the planes $$5x + 8y + 13z - 29 = 0$$ and $$8x - 7y + z - 20 = 0$$ and the points (2, 1, 3) and (0, 1, 2), respectively, is :
- A.$${\pi \over 3}$$
- B.$${\pi \over 4}$$
- C.$${\pi \over 6}$$
- D.$${\pi \over 12}$$
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