Recall · M4U-P1-QP-TRIGONOMETRY-RATIOS-01
exact related angle
Maths4U Original · Short practice
Find \(\cos120^\circ\).Enter one number or fraction. Round decimals to at least six decimal places when needed.
Pure 1 course · All short practice · Notes & examples
Maths4U Original · 9709 Pure 1
Exact values, quadrants and general angles
Check a short answer, use a hint, then study the reasoning. These checks assess the final answer; use the exam-style problems to practise written explanations.
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Method · M4U-P1-QP-TRIGONOMETRY-RATIOS-02
periodic ratio
Maths4U Original · Short practice
Find \(\tan225^\circ\).Enter one number or fraction. Round decimals to at least six decimal places when needed.
Apply · M4U-P1-QP-TRIGONOMETRY-RATIOS-03
identity plus sign
Maths4U Original · Short practice
If \(\sin\theta=3/5\) and \(90^\circ<\theta<180^\circ\), find \(\cos\theta\).Enter one number or fraction. Round decimals to at least six decimal places when needed.
Check understanding · M4U-P1-QP-TRIGONOMETRY-RATIOS-04
exact radians
Maths4U Original · Short practice
Which equals \(\sin(5\pi/3)\)?Choose one answer.
Fresh review variant · M4U-P1-QP-VAR-TRIGONOMETRY-RATIOS-01
exact related angle
Maths4U Original · Short practice
Find \(\cos180^\circ\).Enter one number or fraction. Round decimals to at least six decimal places when needed.
Fresh review variant · M4U-P1-QP-VAR-TRIGONOMETRY-RATIOS-02
periodic ratio
Maths4U Original · Short practice
Find \(\tan135^\circ\).Enter one number or fraction. Round decimals to at least six decimal places when needed.
Fresh review variant · M4U-P1-QP-VAR-TRIGONOMETRY-RATIOS-03
identity plus sign
Maths4U Original · Short practice
If \(\sin\theta=-5/13\) in quadrant III, find \(\cos\theta\).Enter one number or fraction. Round decimals to at least six decimal places when needed.
Fresh review variant · M4U-P1-QP-VAR-TRIGONOMETRY-RATIOS-04
exact radians
Maths4U Original · Short practice
Find \(2\sin(7\pi/6)\).Enter one number or fraction. Round decimals to at least six decimal places when needed.