Teaching UP TGT Mock Test Series 2025 Mathematics Vector Algebra Scalar and Vector Product

यदि θ सदिश 4(î - k̂) और î + ĵ + k̂ के बीच का कोण है, तो (sin θ + cos θ) किसके  बराबर है?

1
0
2
\(\dfrac{1}{2}\)
3
1
4
2
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