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

EXERCISE 5B : Number 7 – 12 Solutions

### EXERCISE 5B : Number 1 – 6 Solutions

**Number 1:**

In △ABC, A = 29⁰, B = 36⁰, b = 15.8cm. Find a

**Number 2:**

In △ABC, A = 54.2⁰, B = 71.5⁰, a = 12.4cm. Find b

**Number 3:**

In △ABC, B = 104.3⁰, C = 31.3⁰, a = 29.0cm. Calculate c

**Number 4:**

In △PQR, P = 83⁰, p = 285m, r = 216m. Calculate R.

**Number 5:**

In △ABC, C = 53⁰, b = 3.56, c = 4.28m. Calculate B

**Number 6:**

In △ABC, A = 115⁰, a = 65m, b = 32m. Solve the triangle completely

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