TS EAMCET 19-July-2022 Shift 2 Solved Paper

Section: Mathematics
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Question : 33 of 160
 
Marks: +1, -0
If the angle between the planes r⋅(11i−2j+αk)=7 and r⋅(2i+4j−2k)=5 is ‌
Ï€
2
, then α=
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