Mathematics Department

Solve the following equations for 0 ( x < 2(: (a) sin x = (b) 2cos x + 1 = 0. 5. Given that sin a = , find the exact value of cos 2a. 6. Differentiate the following with respect to x: (a) (b) 7. (a) If , show that x2 + (2 – k)x + (3 – k) = 0. (b) Show that for real roots, k ( 2(2 or k ( (2(2. 8. … ................
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