Show sin 67 degrees equals to cos 23 degrees This is year 11 trigonometry. And yea I don't understand this question

Expert Answers

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sin67 = cos23

This is a true comment.

sin67 = 0.9205

cos23 = 0.9205


Usually if `alpha` is any small angle;

`sinalpha = cos(90-alpha)`

`cosalpha = sin(90-alpha)`


If `alpha = 67` then;

`90-alpha = 90-67 = 23`

Approved by eNotes Editorial Team
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