a+b pangkat 2 y=a+bx 32. Diketahui ada lantai seluas 105 m pangkat 2 dengan bentuk persegi panjang yang selisih antara panjang dan lebarnya 8 m. Hitung panjang maupun lebar lantai yang dimaksud! Jawab: Panjang – lebar = 8. Panjang = 8 + L. Luas = Panjang x Lebar. 105 = 8 + L X L. 8L + L pangkat 2 = 105. 105 - 8L + L pangkat 2 = 0 L + 15 L-7 = 0. L = -15
sin(a+b) Take, g = 10 ms − 2 b 605.3 m b 600 m c 80 m d 230 m 66 A ball is projected upwards from the top of a tower with velocity 25 ms − 1 making an angle of 3 0 ∘ with the horizontal. If the height of the tower is 70 m , after what time from the instant of throwing, will the ball reach the ground?
cos (a+b) We explore alternative formulae for the area of a triangle. The ½ a b sinC formula works best when we know two sides and the angle between them SAS. We d