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Answer 1

Step-by-step explanation:

1. 30°
2. 20°
3. 30

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Answer 2

Answer:

1)√3 tan 2x-3=0

tan 2x=3/√3

tan 2x= √3

w. k. t. tan. 60=√3

so, x=30

2) 2cos 3x=1

cos 3x=1/2

w. k. t. cos 60 is 1/2

so, x=20

3) 2sin 2x=√3

sin 2x=√3/2

w. k. t. sin 60=√3/2

so, x=30