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C1 and C2 DOUBTS HERE!!!!!

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xainer:

--- Quote from: astarmathsandphysics on August 27, 2012, 04:24:30 pm ---http://www.astarmathsandphysics.com/a_level_maths_notes/C1/a_level_maths_notes_c1_differentiation.html


--- End quote ---
Thank you!!

astarmathsandphysics:
Got this question from someone. Answer in attachment.

1)
Prove that   sin2x /(1+cos2x) = tanx


2)
Solve the eqn  2sec2X + tanX - 3 = 0             (X stands for theeta and  0<=X<=180)

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