Question

1. Calculati sin30 de grade + cos60 de grade.
2. Calculati 2cos60 degrade + radical din 3 ori cos30 de grade.
Va rog, repedee :*

Answer 1

1) 1/2+1/2=1
2) 2*1/2+ radical din 3 * 1/2=(2+ radical din 3 )/2

Answer 2

1) sin30°+cos60°=1/2+1/2=1
2) 2cos60°+radical3cos30°=2×1/2+radical3 radical3/2 = 1+4radical din 108/2