Question

cos²0+cos²π/6+cos²π/3+cos²π/2​

Answer 1

Answer:

2

Step-by-step explanation:

applying the values of cos π and π/6,π/3,π/2

we get

1+3/4+1/4+0=1+1=2

Answer 2

Step-by-step explanation:

cos0 = 1 , cos30=root(3/2), cos60 =1/2 , cos90=0 so

1+(3/4)+(1/4)+0 = 2