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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
answered-by-expert Expert Answer
Figure shows a ΔABC with begin mathsize 14px style angle end styleB = 90° .
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
begin mathsize 14px style 5 space x squared space equals space 36 space c m end style
x = 2.68 cm
 
BC = 2x = 5.36 cm
Answered by Thiyagarajan K | 19 Nov, 2023, 10:21: AM

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