Sara claims that the number of pages she has read in her book is proportional to the number of minutes that she has spent readin
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Use cross multiplication
Since the three angles of a triangle add to give 180°
The the size of the largest angle 4 = 180° ×
= 180° ×
∴ the size of the largest angle = 80°
The the size of the largest angle 4 = 180° ×
= 180° ×
∴ the size of the largest angle = 80°