Categories Mathematics 1 – tanθtanphi/1 + tanθtanphi = Post author By esimpk Post date June 16, 2021 No Comments on 1 – tanθtanphi/1 + tanθtanphi = cos(θ+phi) cos(θ-phi) cos(θ+phi)/cos(θ-phi) None of Above ← 1 – cosα/sinα = → 1 + cot²2θ/2 = Leave a Reply Cancel replyYour email address will not be published.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.