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`        Range of the function f(x) = cos (K sinx) is (-1,1), then the positive integral value of K can be ______.`
10 months ago

1645 Points
```							Obviously ksinx lies in between-k and k. Therefore cosine of ksinx lies in between cosk and cos0= 1. So we want cos k to be -1. So k is pi. But k is integral. So one of the possible values of k is 4.
```
10 months ago
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### Course Features

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