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Flip to reveal answersState SOH-CAH-TOA.
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All 4 Flashcards — Right-Angle Trigonometry
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Question
State SOH-CAH-TOA.
Answer
sin = opp/hyp, cos = adj/hyp, tan = opp/adj
💡 Hint
Works in right-angled triangles only.
Question
When should you use inverse trig?
Answer
When angle is unknown and side ratio is known.
💡 Hint
Use sin^-1, cos^-1, tan^-1 on GDC.
Question
Which side is opposite theta?
Answer
The side directly across from angle theta.
💡 Hint
Mark theta clearly before choosing ratio.
Question
Common trig mistake in IB Paper 1?
Answer
Using wrong ratio due to side mislabelling.
💡 Hint
Label opposite, adjacent, hypotenuse first.
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Full study notes for Right-Angle Trigonometry
Topic 3.2 hub
2D and 3D trigonometry
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