What is the answer and explanation Burning Of coat (b) Digestion of rood in the bodv - (d)All Ã r@examples - Maths - Fundamental Concepts

Question

What is the answer and explanation

Ashok Kumar Vardhan · Accepted Answer

Dear student,
The picture of the pentagon ABCDE is as shown:<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_5b7e8fafd61c8%20jpg"
style=
"width: 930px; height: 1023px;">In  a regular polygon of n sides ,Exterior angle=360n=3605=72o Hence,Interior angle=180o-72o=108oAlso,All sides of a regular pentagon are equal
Hence,△EDA and △ABC are isosceles triagles
⇒∠EDA=∠EAD∴In △EDA,∠EDA+∠EAD+∠DEA=1800⇒2∠EDA+108o=1800⇒2∠EDA=1800-108o⇒2∠EDA=72o⇒∠EDA=∠EAD=36oSimilarly,∠BAC=∠BCA=36o∴∠DAC=∠EAB-∠EAD+BAC⇒∠DAC=108o-36o+36o⇒∠DAC=108o-72o⇒∠DAC=36oHence,option A is the correct option

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What is the answer and explanation What is the answer and explanation Burning Of coat (b) Digestion of rood in the bodv - (d)All år@examples of combustion 16. CD is a triangle inscribed in a regular pentagon ABCDE. Find ZDAC (in degrees). (b) 450 (c) 600

What is the answer and explanation

What is the answer and explanation Burning Of coat (b) Digestion of rood in the bodv - (d)All år@examples of combustion 16. CD is a triangle inscribed in a regular pentagon ABCDE. Find ZDAC (in degrees). (b) 450 (c) 600