Question

find the answer of this question and take points chapter name -traingle and its properties​

Answer 1

Answer:

∠A = ∠C = 54° & ∠B = 72°

Step-by-step explanation:

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Let A' be exterior angle .

• Given :

• ∠C = 0.75 ∠B &
• ∠A = (3/7)A'

• We know that :

• ∠A' = ∠B + ∠C

....(1)

• ∠A' = (180°- ∠A) = 180° - (3/7)A'
• A' *(10/7) = 180°
• A' = (180° *7)/10 = 126°

• 126° = ∠B + ∠C

....[ from 1]

• = ∠B + 0.75∠B
• = 1.75∠B
• ∠B = 72°
• ∠C = 0.75∠B = 0.75*72 = 54°
• ∠A = 180°- (126°) = 54°

Answer 2

Answer:

this is answer. have a good day...