Question

5Cos²60° + 7 Sec²30° - tan²45°
Sin²30° + Cos²30​

Answer 1

Answer:

5 cos square 60° + 7sec square 30°- tan square 45°=5 into 1/4 + 7 into 4/3 + 1 = 5/4 + 28/3 - 1 = (15 + 112- 12)/12=139/12