Answer:

1. a = 20°, c = 15

angle B = 180° (90+20)

= 180-110

= 70°

angle B is 70°

2. B = 55°, b = 10

angle A = 180° (90+55)

= 180-145

= 35°

angle A is 35°

3. A = 48, a = 8

angle B = 180° (90+48)

= 180-138

= 42

angle B is 42°

Step-by-step explanation:

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