Question

3cos2 30° + 4cos2 45°
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sen2 60° +3sen2 30°

Answer 1

3.3/4+ 4. 1/2                    9/4+2              17/4
---------------------------- = ----------------- = ------------ = 68/24 = 34/12= 17/6
3/4+ 3. 1/4                           6/4                 6/4