exam
Maths Puzzle
Numerical Ability
find the rectangular form of 4(cos(5/6 pi)+ i sin(5/6 pi)
find the trigonometric form of (sqrt3)-i.
please help, I need step by step help, thanks
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exam Other Question
i need help now
Use appropriate identities to find the exact values of the following.
a. sec(75degrees)
so far I have sec(45deg+30deg)? then stuck.
b. sin(7pi/12)
I think this converts down to sin(2pi/3)? then stuck.