One approximate solution of the equation sinx° = 0.53 is x = 32. Use this value of x to find the solution of the equation that lies between 90° and 180°.

1. (a)One approximate solution of the equation sinx° = 0.53 is x = 32. Use this value of x to find the solution of the equation that lies between 90° and 180°.[1]
2. (b)Triangle ABC is right-angled at B and BC is produced to D. AB = 5 cm, BC = 12 cm and AC = 13 cm. Write down the value of cos AĈD. [Diagram showing a right-angled triangle ABC, with angle B as 90 degrees, BC extended to D. Sides AB=5, BC=12, AC=13][1]

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