Using Matlab only

I need full answer of exercises 1,2,3

otherwise I will put dislike in

Two trigonometric identities are given by: (a) cos2xsin2x=12sin2x (b) sinx2tanxtanx=cosx21 For each part, verify that the identity is correct by calculating the values of the left and right sides of the equation, substituting x=/10. Exercise 2: Two trigonometric identities are given by: (a) (sinx+cosx)2=1+2sinxcosx (b) sin2x12cosx3cos2x=1cosx13cosx For each part, verify that the identity is correct by calculating the values of the left and right sides of the equation, substituting x=20. Exercise 3: Define two variables: alpha =/8, and beta =/6. Using these variables, show that the following trigonometric identity is correct by calculating the values of the left and right sides of the equation. tan(+)=1tantantan+tan