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Posted: **Mon Jul 11, 2022 12:50 pm**

: Question 1 A B C I Ii Show That Cos 3x 4cos X 3cosx Use The Result In Part A To Find The Solutions Of Cos 3x 1 (70.62 KiB) Viewed 20 times

Question 1 a. b. C. i. ii. Show that cos (3x)=4cos³x-3cosx Use the result in part (a) to find the solutions of cos (3x)+cos(x)=0 for x = [0,27] Let sec(a)=2 and cosec (ß)=3, where 0<a</ Find sin(a+ß) Find tan (23). and << 2 10 Marks (2 marks) (3 marks) (3 marks) (2 marks)