Question

please answer this fast and correct with all solution how you do
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Answer 1

• By RHS congruence condition if hypotenuse and  one side of one right triangle are equal to hypotenuse and one side of other right triangle then both right triangles are congruent.

It is given that BD=CE and BC is the hypotenuse of small triangles CEB and BDC

Therefore, In right triangles BCD and CBE

BC=CB=common side⋯⋯[hypotenuse] 

And BD=CE=given⋯⋯[sides of right triangles]

So, by RHS condition 

△CBD≅△BCE

• Yes, △CBD≅△CBE
• Yes, △DCB≅△EBC

Hope this helps you

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Answer 2

Answer:

Light | Exercise

Concave mirror is used by dentist, solar furnace, reflector of a torch, etc. Convex mirror is used in rear view mirrors.