CBSE Class 11-science Answered
Solve question no-4
![question image](http://images.topperlearning.com/topper/new-ate/637381IMG20200623215621593.jpg)
Asked by richasingh0708.bmps | 23 Jun, 2020, 22:00: PM
We have given that tan alpha = 1/7 and sin beta = 1/sqrt{10}
To prove that alpha + 2 beta = pi/4
This can be solved as follows:
![](https://images.topperlearning.com/topper/tinymce/imagemanager/files/16f4b025ad51aa8099055d0e26997b2d5ef3067b8d1d95.34719101WhatsAppImage20200624at1.21.05PM.png)
Answered by Renu Varma | 24 Jun, 2020, 13:24: PM
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