| Exam Board | OCR MEI |
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| Module | AS Paper 2 (AS Paper 2) |
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| Year | 2021 |
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| Session | November |
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| Topic | Trig Equations |
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3 In this question you must show detailed reasoning.
You are given that \(\tan 30 ^ { \circ } = \frac { 1 } { \sqrt { 3 } }\).
Explain why \(\tan 690 ^ { \circ } = - \frac { 1 } { \sqrt { 3 } }\).