As sal said in the video, sin a = 90-cos a. and cos a = 90-sin a.
angle a has sin 54. wh...
Mathematics, 03.10.2019 09:00 jadaroyval
As sal said in the video, sin a = 90-cos a. and cos a = 90-sin a.
angle a has sin 54. what is the cos for that angle? how do you know?
what is cos b? how do you know?
Answers: 1
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