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`        if a,b,c are in H.P., then cosecA(cosecA+cotA),cosecB(cosecB+cotB),cosecB(cosecC+cotC)`
one month ago

Vikas TU
9517 Points
```							Dear student Please complete the questio n , What do you want to ask is not clear. We will happy to help to help Good Luck
```
one month ago
1730 Points
```							hello sajid, cosecA(cosecA+cotA),cosecB(cosecB+cotB),cosecC(cosecC+cotC) will be in AP if a, b, c are in HP.the proof is quite lengthy, but can be solved by using the identity cosecx(cosecx+cotx)= (1+cosx)/sin^2x= 1/(1 – cosx),and then employing the cosine rule, factorisation and rearrangements.kindly approve :)
```
one month 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