Prove the identity. 6 tion 9 (x) 1- TT and 42. cos - X 43. sin...

 

 

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Prove the identity. 6 tion 9 (x) 1- TT and 42. cos - X 43. sin 2 Nouce that. TT - 2 X10 own in Figure 14(a), is obtained by sin x nature of the function 47. sec y 48. tan a - = + x ne]=y (6) 45. sin cot 0 = cos 0 = cos x cos y = tan y sin y sin a = = tana sina 44. sin(x) = sin x 46. (sin x + cos x) = 1 + sin 2x 49. cot0+ sec0 = tan 0 + csc0 50. 2 csc 2t = sec t csc t 2 tan 0 1 - tan0 51. tan 20: 52. = 1 sin 0 + 1 1 + sin 0 = 2 sec0 53. sin x sin 2x + cos x cos 2x 54. sinx - siny = sin(x + y) sin(x - y) = COS X Prove the identity. 6 tion 9 (x) 1- TT and 42. cos - X 43. sin 2 Nouce that. TT - 2 X10 own in Figure 14(a), is obtained by sin x nature of the function 47. sec y 48. tan a - = + x ne]=y (6) 45. sin cot 0 = cos 0 = cos x cos y = tan y sin y sin a = = tana sina 44. sin(x) = sin x 46. (sin x + cos x) = 1 + sin 2x 49. cot0+ sec0 = tan 0 + csc0 50. 2 csc 2t = sec t csc t 2 tan 0 1 - tan0 51. tan 20: 52. = 1 sin 0 + 1 1 + sin 0 = 2 sec0 53. sin x sin 2x + cos x cos 2x 54. sinx - siny = sin(x + y) sin(x - y) = COS X