1.Diberikan fungsi f(x) =2+x,g(x)=x²-1 dan h(x) =2x.Rumus dari ( h o g o f) (x) adalah... 2.Besar sudut 98,525° dalam ukuran derajat,menit,sampai detik adalah..

1. (h o g o f)(x) = h(g(f(x)))
g(f(x)) = (2 + x)² - 1 = 4 + 4x + x² - 1
= x² + 4x + 3
h(x² + 4x + 3) = 2(x² + 4x + 3)
(h o g o f)(x) = 2x² + 8x + 6

2. 98,525° = 98° + (0,525×60)′
= 98° + 31,5′ = 98° + 31′ + (0,5×60)″
= 98° 31′ 30″

3. 270° × π/180° = 3/2 π radian

4. 4π × 180/π = 720°

5. 35,12° = 35° + (0,12×60)′
= 35° + 7,2′ = 35° + 7′ + (0,2×60)″
= 35° 7′ 12″

6. 47° 15′ 45″ = 47° + (15/60)° + (45/3600)°
= 47° + 0,25° + 0,0125° = 47,2625°