Question

Please help
Trigonometri question

Answer 1

HEY THERE!!



Method Of Solution;-




Construction;- Draw AL Perpendicular to BC

Proof;-



In Right Triangle ALB and ALC , We have



AB=AC (Given because D is the point on BC.



AL =AL ( Common in In Right Triangle ALB and ALC )



Hence,



•°• ∆ ALB≅∆ ALC (By RHS Axiom)

So, AB=AC




Here, AB= 20 Centimeters is equal to AC because RHS Axiom which are proved in above Equation;-


Hence, AB=AC=20 Centimeters;



Conclusion:- AC measure 20 Centimeters.


Thanks!!!