Question

Value of cos^2 48 and cos^2 12 in fractional form?It's very urgent plz keep it very fast plz plz plz plz plz plz

Answer 1

cos48 = 0.6691 = 0.67 = 2/3 (approx)
so,
cos²48° = { 2/3}² = 4/9

and cos12° = 0.9781

now , cos²12° = (0.9781)² = 0.9566
= 0.96 = 96/100 = 24/25