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`        If tan A= 1/3 and tan B = 1/7 then the value of 2A+B=?`
2 years ago

Arun
23740 Points
```							Dear Samira tanA = 1/3, tanB = 1/7Then tan(2A) = 2tanA/(1-tan^2A) = (2/3)/(1 - 1/9) = 3/4tan(2A + B) = (tan2A + tanB)/(1 - tan2A.tanB)tan(2A + b) = (3/4 + 1/7)/(1 - (3/4)(1/7))tan(2A + B) = (21/28 + 4/28)/(1 - 3/28)tan(2A + B) = (25/28)/(25/28) = 1i.e. 2A + B = 45° RegardsArun (askIITians forum expert)
```
2 years ago
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• 31 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions