Which field did Tusi make significant strides in?
Trigonometry
Botany
Geology
Meteorology
Answer
Trigonometry is the field in which Tusi made significant strides. He developed the Tusi couple, a geometric construction that allowed him to solve the problem of finding the sine of an angle without using trigonometric tables. This construction was later used by European mathematicians to develop the modern understanding of trigonometry.
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