rose654
rose654 rose654
  • 17-08-2019
  • Mathematics
contestada

Please help me with this questionnn

Please help me with this questionnn class=

Respuesta :

thedemon840
thedemon840 thedemon840
  • 17-08-2019

Answer:

-(3 /5)

Step-by-step explanation:

Firstly expand cos

(cos x)(cos 3pi/2) + (sin x)(sin 3pi/2)

Then if tan x = 3 over 4...by drawing a triangle and using trig ratios

(* Sin x = 3/5)

Then substitute into the expansion

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Kairlyn
Kairlyn Kairlyn
  • 17-08-2019
-(3/5) is the correct answer
Answer Link

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