**CHAPTER 5: Trigonometry (1) The Sine Rule**

EXERCISE 5B : Number 1 – 6 Solutions

### EXERCISE 5B : Number 7 – 12 Solutions

**Number 7:**

In △ABC, B = 25.6⁰, C = 124.4⁰, c =39.2m. Solve the triangle completely

**Number 8:**

In △XYZ, Y = 29.8⁰, Z = 51.4⁰, x = 19.6cm. Solve the triangle completely

**Number 9:**

In △ABC, A = 38⁰18′, a = 252m, b = 198m. Solve the triangle completely

**Number 10:**

In △ABC, C = 96.2⁰, b = 11.2cm, c = 39.4cm. Solve the triangle completely

**Number 11:**

Calculate the values of angles A and C of △ABC, where b = 14.35cm, a = 7.82cm and B = 115.6⁰ (WAEC)

**Number 12:**

Calculate the values of a, A and C in △ABC given that b = 17.23cm, c = 10.86 and B = 101⁰15′ (WAEC)

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