Question

do this with clear process in paper and send ok ​

Answer 1

Answer:

use the formulas

Step-by-step explanation:

It is very basic triangle .use Pythagoras

if cos x=3/5 then sinx=4/5. now use

$sin3x = 3sinx - 4 {sin}^{3} x$

$cos3x = 4 {cos}^{3} x - 3cosx$

$tan3x = \frac{sin3x}{cos3x}$

Answer 2

Answer:

using formulas,

sin3theta=3sinx -4sin^3x

cos 3 theta =4cos^3x-3cos x

tan3x =sin3x/cos3x