Question
Let a=i+j+k, b=2i+j−k, and c=a×b. The angle between c and a is:
Since the dot product a ⋅ c =0, the vectors a and c are orthogonal (perpendicular). Therefore, the angle θ between c and a is π/2 or 90 degrees. More Quant Miscellaneous Questions
- Question 1
- Palash invest thrice the sum invested by Vicky and withdraws half of the sum after 3 months and again withdraws half of the remaining sum after 3 months. F...
- ? = 234.87 + 32.14% of (59.88 x 70.04)
- A and B enter into partnership. A invests some money at beginning, B invests thrice the amount after 4 months and C invests double the amount after 8 month...
- {√676.12 + 13.012 – 146.89 } = ?
- In ΔPQR, ∠Q is a right angle. If PQ = 15 cm and QR = 20 cm, find the length of the circumradius of triangle PQR.
- 121, 129, 139, 151, 165, 181
- The ratio of two numbers is 4:8 and their LCM is 64. The numbers are:
- A man invests ₹20,000 in a scheme that offers a 10% simple interest per annum. After how many years will his total amount become ₹30,000?
- ? = 49.99² ÷ (1.98⁵ + 8.01 × 89.91) + 75.15% of (263.89 × 49.11)
Relevant for Exams:
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
- 200 Questions with Detailed Solutions
- Section-wise Coverage (GA, English, Quant & Reasoning)