Trigonometrymedium · Past Paper
If cos θ = 4/5, find the value of tan²θ.
A9/16
B16/9
C3/4
D4/3
✓ Correct Answer: A — 9/16
b=4, h=5, so p=3. tan θ = 3/4, tan²θ = 9/16.
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