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 lab1
 calc Assignment
 Extended essay help
 IB Math SL Trigonometry questions
 Topics suggestion for EE
 kinematics, one directional motion, two directional motion, vectors
 kinematics, vectors, measurement,projectile motion, equations of motion, graphs
 kinematics, projectile motion
 Market failure
 Perfect competition, monopoly, oligopoly
 Theory of firm, monopolistic competition
 elasticity of demand
 Supply and demand
Question
A triangle has sides of length 4, 5, 7 units. Find, to the nearest tenth of a degree, the size of the largest angle.
Working: 


Answer: ...................................................................... 
(Total 4 marks)
2. O is the centre of the circle which has a radius of 5.4 cm.
The area of the shaded sector OAB is 21.6 cm2. Find the length of the minor arc AB.
Working: 


Answer: ...................................................................... 
(Total 4 marks)
3. The circle shown has centre O and radius 6. is the vector , is the vector and is the vector .
(a) Verify that A, B and C lie on the circle.
(3)
(b) Find the vector .
(2)
(c) Using an appropriate scalar product, or otherwise, find the cosine of angle .
(3)
(d) Find the area of triangle ABC, giving your answer in the form a, where a Î .
(4)
(Total 12 marks)
4. Solve the equation 3 sin2 x = cos2 x, for 0° £ x £ 180°.
Working: 


Answer: ...................................................................... 
(Total 4 marks)
5. The diagrams show a circular sector of radius 10 cm and angle θ radians which is formed into a cone of slant height 10 cm. The vertical height h of the cone is equal to the radius r of its base. Find the angle θ radians.
Working: 


Answer: ...................................................................... 
(Total 4 marks)