CBSE Class 10 Answered
pt
![question image](https://images.topperlearning.com/topper/new-ate/11629226815440159m1.jpg)
Asked by mskjoshi | 02 Feb, 2019, 15:18: PM
![begin mathsize 18px style fraction numerator tan empty set over denominator sec empty set plus 1 end fraction
equals fraction numerator begin display style tan empty set open parentheses sec empty set minus 1 close parentheses end style over denominator begin display style open parentheses sec empty set plus 1 close parentheses open parentheses sec empty set minus 1 close parentheses end style end fraction
equals fraction numerator tan empty set open parentheses sec empty set minus 1 close parentheses over denominator sec squared empty set minus 1 end fraction
equals fraction numerator begin display style tan empty set open parentheses sec empty set minus 1 close parentheses end style over denominator begin display style tan squared empty set end style end fraction
equals fraction numerator sec empty set minus 1 over denominator tan empty set end fraction end style](https://images.topperlearning.com/topper/tinymce/cache/c82109ba84aebfd11c0cae1579defa8f.png)
Answered by Arun | 02 Feb, 2019, 21:35: PM
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