(a) A point moves around the unit circle centered at the origin with coordinates .
The -coordinate of is . Find all possible values of .
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Practice IB Mathematics Analysis and Approaches (AA) Topic AHL 3.9—reciprocal Trig Ratios and Their Pythagorean Identities. Inverse Circular Functions with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for AHL 3.9—reciprocal Trig Ratios and Their Pythagorean Identities. Inverse Circular Functions and mirrors Paper 1, 2, 3 style where relevant.
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(a) A point moves around the unit circle centered at the origin with coordinates .
The -coordinate of is . Find all possible values of .
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(a) A point moves around the unit circle centered at the origin with coordinates .
At a certain instant, the -coordinate of is . Find all possible values of .
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Solve for .
Consider the function , where is in the domain of .
(a) Show that the roots of the equation satisfy the equation
(b) Show that
Prove that for .