(b) The graphs of f() = sin 2 and g() = cos ( 45) for [270 ; 180] are sketched below: Use your graphs above and the answers (where relevant) of 5(a) to answer the following: Evaluate f(45) g(45). (3) – (ii) find so that f() > g() if [-135 ; 90] (3) ______________________________________________________________________ SECTION B Question 6 [10 marks] The framework for a model consists of a cyclic quadrilateral BCDE in the horizontal plane and vertical post AB as shown in the diagram. From E the angle of elevation of A is y. BE = BC and =x
(b) The graphs of f() = sin 2 and g() = cos ( 45) for [270 ; 180] are sketched below: Use your graphs above and the answers (where relevant) of 5(a) to answer the following: Evaluate f(45) – g(45). (3) (ii) find so that f() > g() if [-135 ; 90] (3) SECTION B Question 6 [10 marks] The framework for a model consists of a cyclic quadrilateral BCDE in the horizontal plane and vertical post AB as shown in the diagram. From E the angle of elevation of A is y. BE = BC and =x ______________________________________________________________________
PRELIM%20P2%202016.docx