ometric Identities SIDE& 110 Howledge (15 Marks] MULTIPLE CHOICE: Circle the most correct answer for cach question. [10 Marks] Evaluate Cost exactly 2 ) () - J2 2 d) - V3 3 ) 2. Find two coterminal angles (one positive and one negative) for 0 = 4 ) I In a) - 7n d) lla 7 7 5 ) G b ) - 6 C ) _ 6 6 6 6 6 6 ) 3. Solve tan x = - 7 ) 8 1 n ) x = Sn 6 b ) x = 2 6 6 ' C) x =- d) xen An 6 3 4. Determine a simplified expression for: sec0 cot Q a) csco b) seco c) sin o 10 d) tan O 5. Simplify the following expression: csco(cos? 0 -1). a) sin '0 b) tan ' 0 c ) - 1 d) 1 6. Evaluate the following: cos - sin ~ + sin ~ cos a ) . V3 + 2 b) V3 + 1 4 c ) V3 + 1 d) V3 - 1 2 21/2 212 7. An expression identical to sin| ~ is : a) - cos x b) cos x c) sin x d) - sin x 8. Using a compound angle formula, express sin ~ + x in terms of sinx and cosx. a ) sin x + V3 cosx b ) sin x - V3 cos x C) cosx + V3 sin x COs x - V3 sin x 2 2 d) 2 2 9. Express cos STE 12 sin 5 TT as a single trigonometric ratio, then evaluate. a) 2 b ) 1 3 2 c ) d) N Which value of x is NOT a solution of the equation 2cos x - cosx - 1 = 0, where 0