Categories Mathematics 1 – cos4α = Post author By esimpk Post date June 16, 2021 No Comments on 1 – cos4α = 2sin²α 4sin²α 4cos²α 2sin²2α ← cos3α = → 1 – cos6α = Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.