Trigonometryhard · Past Paper
What is the value of cot 15 + cot 75?
A2
B4
Csqrt(3)
D1
✓ Correct Answer: B — 4
1/tan 15 + tan 15 = (1 + tan^2 15)/tan 15 = 2/sin 30 = 4.
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✓ Correct Answer: B — 4
1/tan 15 + tan 15 = (1 + tan^2 15)/tan 15 = 2/sin 30 = 4.
Share this question