Question

Find the value of sin230º – cos230º.​

Answer 1

$sin(230°) - cos(230°) </p><p>= sin(50°) + sin(50°) </p><p>= 2[{sin(50+50)/2}{ cos(50-50) /2}</p><p>= sin(100°)/2</p><p>= cos(80°)/2$

Answer 2

Answer:

-21

Step-by-step explanation:

= ( 21) 2- 3)2

= 41-43

= -42

=-21