Question 6

6.1 Complete: ···= a² + b² – 2ab cosĈ .(1)

6.2 TRS is a secant of the circle, and SU is a tangent at U. TU = 16 cm, TR = 12 cm and T̂ = 41°.

Calculate the:

6.2.1 Length of UR, correct to two decimals. (3)

6.2.2 Size of Û₂ (3)

6.2.3 Length of secant TRS (5)
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