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oksano4ka [1.4K]
3 years ago
14

A triangle, where the two angles are 30° and 90°, what are the remaining angles

Mathematics
2 answers:
Aleksandr-060686 [28]3 years ago
7 0

Answer:

60⁰

Step-by-step explanation:

A triangle has three angles.

The sum of its angles = 180⁰

[ By angle sum property ]

Let the unknown angle be 'x'

Then,

30⁰ + 90⁰ + x = 180⁰

120⁰ + x = 180⁰

x = 180⁰ - 120⁰

x = 60⁰

Therefore, the unknown angle will be equal to 60⁰

iris [78.8K]3 years ago
5 0
60° because 90°+ 30°= 120°and 180°-120°=60°
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