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OpenStudy (anonymous):
Yr 12 TRIGONOMETRY: how to prove that: tan( π/2 - Ø ) = cot Ø
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OpenStudy (superdavesuper):
use the following eqns: tan θ = sin θ / cos θ sin(A + B) = sinA.cosB + cosA.sinB cos(A + B) = cosA.cosB - sinA.sinB sin (pi/2) = 1 cos (pi/2) = 0
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