Question

एक्स का मान ज्ञात कीजिए​

Answer 1

Answer:

70°

Step-by-step explanation:

∠a = x

∠b = 90° ( given )

∠c = 20° ( given )

∠a +∠b + ∠c = 180°  ( angle - sum property )

x + 90° + 20° = 180°

x+110° = 180°

x = 70°

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Answer 2

Step-by-step explanation:

<B = 90°

<C = 20°

sum of all angles must be = 180°

180° = <B + <C = <A

180° = 90° + 20° = <A

110° - 180° = <A

<A = 70° ans