1/2 = 2/4 1/2 = 1/2 Hence verified cos (x y) = cos x cos y – sin x sin y cos (60° 30°) = cos 60° cos 30° – sin 60° sin 30° cos (90°) = (1/2) × (√3/2) – (√3/2) × (1/2) 0 = √3/4 – √3/4 0 = 0 Hence verified cos (x – y) = cos x cos y sin x sin yFree linear equation calculator solve linear equations stepbystep This website uses cookies to ensure you get the best experience By using this website, you agree to our Cookie PolicyThe equation of the directrix of the parabola whose vertex and focus are (1, 4) and (2, 6) respectively is A x 2y = 4 B x y = 3 asked 1 hour ago in Parabola by Hetshree (
6 15points Give The X Y As 1 2 2 5 3 6 4 8 5 Gauthmath