A student claims that because the two ratios correspond to the same pair of…
MATHEMATICS · Subjective · CBSE · Mathematics · Introduction to Trigonometry · Introduction to Trigonometry
Problem
A student claims that sin(90∘−θ)=cosθ because the two ratios correspond to the same pair of perpendicular sides in a right–angled triangle.
(i) Using a labelled right–angled triangle, explain why this statement is true.
(ii) From part (i), write any two other pairs of complementary trigonometric ratios that are equal.