Mathematics for IGCSE & O level - Angles (Section 1 - No. 5) | ExamPlay

Mathematics for IGCSE & O level - Angles (Section 1 - No. 5)

What is the value of x in a triangle where one angle is 90 degrees and another is 30 degrees?

30°

60°

90°

120°

解释

180-90-30=60°

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