CBSE Class 9 Answered
in right angle triangle ABC angle B =90 degrees and tanC=1/2.if AC=6cm then then the lenght of side BC is
Asked by rajetigirija | 19 Nov, 2023, 08:11: AM
![](https://images.topperlearning.com/topper/tinymce/imagemanager/files/6f36d87e9195259e3152f65c0738a2d5655992b9c8c758.71769078f3.png)
Figure shows a ΔABC with
B = 90° .
![begin mathsize 14px style angle end style](https://images.topperlearning.com/topper/tinymce/cache/f1d45fc0daa19a85e39a8446cd27e48f.png)
tanC = AB/BC = 1/2
Let AB = x , then AC = 2x
![begin mathsize 14px style square root of x squared plus 4 x squared end root space equals space 6 space c m end style](https://images.topperlearning.com/topper/tinymce/cache/c8cbaf0ce34944f70ee7125e082b74b7.png)
![begin mathsize 14px style 5 space x squared space equals space 36 space c m end style](https://images.topperlearning.com/topper/tinymce/cache/6ee9c58fe1b6240853363cd82cff5ce8.png)
x = 2.68 cm
BC = 2x = 5.36 cm
Answered by Thiyagarajan K | 19 Nov, 2023, 10:21: AM
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