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PLEASE GIVE THE ANSWER IF KNOWS.​

Answer»

1)90° 2) 3/4Step-by-step explanation:SIN A =1/2 so A is 30° and cosB=1/2 so B=60°so 30+60=90and the second is about RENOWNED TRIANGLE ( Pythagorean TRIPLET) 3,4,5 so cosA =4/5 so A=37° then tanA=3/4



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