Show sin 67 degrees equals to cos 23 degreesThis is year 11 trigonometry. And yea I don't understand this question
1 Answer
jeew-m | College Teacher | (Level 1) Educator Emeritus
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`