in triangle abc, angle b=45 degree, anglec=45degree, a b = 5 cm then find the length of the other sides. Share with your friends Share 1 Manbar Singh answered this In ∆ABC, we have∠B = ∠C = 45°⇒AC = AB sides opposite to equal angles are equal⇒AC = 5 cmNow, BC2 = AB2 + AC2⇒BC2 = 52 + 52⇒BC2 = 25 + 25⇒BC2 = 50⇒BC = 52 cm 5 View Full Answer Sumukh M answered this angleb =450,angle c=450.by using angle sum property, we get angle a=900.ab=ac=5 cm (angles opposite to equal sides)on applying trigonometry,cos45=1/rt.2.=ab/bc=5/acac=5 rt.2 cm.it could also be solved with pythagoras theorem. 1
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