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1.5 Trigonometry

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Question 28

A parallelogram ABCD ABCD\,ABCD has area 55 cm2. Given AB AB\,AB has length 5 cm, BC BC\,BC has length 12 cm and angle ABC ABC\,ABC is obtuse.

a.

Find the size of angle ABC ABC\,ABC to 2 decimal places.

[3]
b.

Find the length of the diagonal AC AC\,AC to 1 decimal place.

[2]

1.5 Trigonometry Questions

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