CBSE Class 10 Answered
If tan A=4/8.Find cosA+sinA
Asked by patelkrish486 | 09 Feb, 2019, 22:09: PM
![tanA equals 4 over 8 equals 1 half equals fraction numerator opposite space over denominator adjacent end fraction
let space adjacent space side space be space 2 straight x space and space opposite space side space be space 1 straight x
hypotenuse space equals space square root of 1 straight x squared plus 4 straight x squared end root equals square root of 5 straight x
sinA equals fraction numerator 1 over denominator square root of 5 end fraction
cosA equals fraction numerator 2 over denominator square root of 5 end fraction
cosA space plus sinA equals fraction numerator 3 over denominator square root of 5 end fraction](https://images.topperlearning.com/topper/tinymce/cache/17d9202b5fa50d333d7ceb29605cfab4.png)
Answered by Arun | 10 Feb, 2019, 16:22: PM
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