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If cos(90)=0 find sin(45)

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half-angle-trigonometric-formulas
double-angle-identities

asked May 25, 2017 in GEOMETRY by anonymous

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1 Answer

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The trigonometric equation is

Find

Rewrite the function is

Half angle trigonometric property :

Substitute and

answered May 26, 2017 by Anney Mentor

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