Math, asked by mukulmaurya78, 2 months ago

1. (i) Find x + y + z
plz tell me ​

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Answers

Answered by friends1664
1

x = 90°

z = 150°

& y = 180 -120 => 180-60 => 120°

So, x+y+z= 90+120+150

= 360

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Answered by ItzBrainlyLords
2

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☞︎︎︎ Solution :

\:  \: \:  \:  \:

★ Let given angles be

\:  \: \:  \:  \:

  • A = 90°

\:  \: \:  \:  \:

  • B = 30°

\:  \: \:  \:  \:

  • C = ?

\:  \: \:  \:  \:

★ we know ,

\:  \: \:  \:  \:

  • Angles along a straight line = 180°

\:  \: \:  \:  \:

★ Finding x

\:  \: \:  \:  \:

⇒ ∠A + ∠x = 180°

\:  \: \:  \:  \:

⇒ 90° + x = 180°

\:  \: \:  \:  \:

  • On Transposing The Terms :

\:  \: \:  \:  \:

⇒ x = 180° - 90°

\:  \: \:  \:  \:

x = 90°

\:  \: \:  \:  \:

★ Finding z

\:  \: \:  \:  \:

⇒ ∠B + ∠z = 180°

\:  \: \:  \:  \:

⇒ 30° + z = 180°

\:  \: \:  \:  \:

  • On Transposing The Terms :

\:  \: \:  \:  \:

⇒ z = 180° - 30°

\:  \: \:  \:  \:

z = 150°

\:  \: \:  \:  \:

\:  \:  \:  \:  \:  \:  \: ➢ To find y we need C

\:  \: \:  \:  \:

We know,

\:  \: \:  \:  \:

  • Angle Sum Property :

\:  \: \:  \:  \:

☞︎︎︎ The sum of 3 interior angles of triangle = 180°

\:  \: \:  \:  \:

\:  \: \:  \:  \: ⇒ ∠A + ∠B + ∠C = 180°

\:  \: \:  \:  \:

\:  \: \:  \:  \: ⇒ 90° + 30° + C = 180°

\:  \: \:  \:  \:

\:  \: \:  \:  \: ⇒120° + C = 180°

\:  \: \:  \:  \:

  • On Transposing The Terms :

\:  \: \:  \:  \:

⇒ C = 180° - 120°

\:  \: \:  \:  \:

C = 60°

\:  \: \:  \:  \:

  • Now,

\:  \: \:  \:  \:

⇒ ∠C + ∠z = 180°

\:  \: \:  \:  \:

⇒ 60° + z = 180 °

\:  \: \:  \:  \:

  • On Transposing The Terms :

\:  \: \:  \:  \:

⇒ z = 180° - 60°

\:  \: \:  \:  \:

z = 120°

\:  \: \:  \:  \:

Here,

\:  \: \:  \:  \:

  • x = 90°

\:  \: \:  \:  \:

  • y = 150°

\:  \: \:  \:  \:

  • z = 120°

\:  \: \:  \:  \:

★ Finding x + y + z

\:  \: \:  \:  \:

\:  \: \:  \:  \: ⇒ 90° + 150° + 120°

\:  \: \:  \:  \:

x + y + z = 360°

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