# trigonometry

posted by raygene

sinxcosx=0,x=?

1. Quidditch

for the problem:
sin(x) * cos(x) = 0
What values of x will result in cos(x)=0 or sin(x)=0?
Hint: in the domain of 0<=x<(2*pi), there are 4 values.

2. Anonymous

simplify the trigonometric expression.

1 1
--- = ---
1+sin 1-sin

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