A) \[10{}^\circ \]
B) \[20{}^\circ ~\]
C) \[40{}^\circ \]
D) \[80{}^\circ ~\]
Correct Answer: A
Solution :
\[\angle B=60{}^\circ ;\text{ }\angle C=40{}^\circ \] \[\angle A=180-100=80{}^\circ \] \[\angle BAD=\angle DAC=40{}^\circ \] \[\therefore \] From \[\Delta \]ABE, \[\angle BAE=180{}^\circ -60{}^\circ -90{}^\circ =30{}^\circ \] =\[30{}^\circ \] \[\angle EAD=40-30=10{}^\circ \]You need to login to perform this action.
You will be redirected in
3 sec