Question

3 In AABC, if ZA = 40° and _B = 80°, find the measure of C.​

Answer 1

Answer:

It has been given that,

⇒ ∠A=∠B−40o   ....(1)

∠A=∠C−50o  ....(2)

Now, in triangle ABC,

∠A+∠B+∠C=180o

⇒ ∠A+∠A+40o+∠A+50o=180o

⇒ 3∠A=180o−50o−40o

⇒ 3∠A=90o

⇒ ∠A=30o

Step-by-step explanation:

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Answer 2

Answer:

It has been given that,

⇒ ∠A=∠B−40o   ....(1)

∠A=∠C−50o  ....(2)

Now, in triangle ABC,

∠A+∠B+∠C=180o

⇒ ∠A+∠A+40o+∠A+50o=180o

⇒ 3∠A=180o−50o−40o

⇒ 3∠A=90o

⇒ ∠A=30o

Step-by-step explanation:

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