Question

30. In ARST (See Fig. 11.51), what is the value of x? S 70 1 bo 20 140° bº 20 T R. Fig. 11.51 (c) 80° a) 100 (a) 40 (b) 90°​

Answer 1

Answer:

x = 100°

Step-by-step explanation:

In triangle ROT

∠ROT + ∠RTO + ∠TRO = 180°

140° + b + a = 180°

a + b = 40° (i)

In RST

∠RST + ∠SRT + ∠STR = 180°

x + a + a + b + b = 180°

x + 2 (a + b) = 180°

x + 2(40°) = 180°

x + 80° = 180°

x = 180° - 80°

x = 100°

Answer 2

Answer:

kindly refer to the attachment

Step-by-step explanation:

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