AP EAMCET · Maths · Vector Algebra
Let are real numbers. If and , then is
- A
- B Greater than one
- C Less than or equal to
- D Less than
Answer & Solution
Correct Answer
(C) Less than or equal to
Step-by-step Solution
Detailed explanation
Given, a→=(sinx)i^+(siny)j^ and b→=(cosx)i^+(cosy)j^ Then, a→×b→=sinxcosy-cosxsinyk^=sinx-yk^ Now, a→×b→=sin2x-y=sinx-y We know that value of sine lies between -1, 1 ⇒a→×b→≤1
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