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`        if a and b are two vectors such that |a vector+b vector|=root 29 and a vector cros(2i^+4j^+4k^)=(2i^+4j^+4k^)cross b vector then find the value of (a vector+b vector).(-7i^+2j^+3k^)`
one year ago

```							Dear student a x (2, 4, 4) + b x (2,4, 4) = 0 Or we can write (a+b )  x (2 i + 4j + 4k) = 0 Hence a + b = p( 2i + 4j + 4k) Now As |a +b| = sqrt (29) 4p² + 16p² + 16p² = 29 p² = 29/36 Hence p = sqrt(29) /6 Now You can calulate the further question.
```
one year ago
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### Course Features

• 19 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions