Respuesta :

kirankumari191175

Answer:

answer is (1/2) when a=0

dillonliyanage

Answer:

a= approx 35.2644

cos(pi/3+a)= approx 0.999998973

Step-by-step explanation:

solve for sin(a)

sin a = (1/sqroot of 3)

arcsin sin(a) = arcsin(1/sqroot of 3)

a= arcsin(1/sqroot 3)

a=approx 35.2644

now substitute a into the cos formula