The date is the sum of { log(2)( 1 / sin(π/22) sin(3(π/22) sin (7(π/22) sin (9(π/22) sin(11(π/22)

45 degres

step-by-step explanation:

sorey if i hav bad engelish im bad engelish

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh