Question

Cos 20°-Cos 70°/
sin 70°-sin 20° =
​

Answer 1

Answer:

cos20 - cos70/sin70 - sin20 = cos(90-70) - cos(90-20)/sin70 - sin 20 = sin 70 - sin 20/sin 70 -- sin 20 = 1 3 * 4.0 Hence proved

Answer 2

Answer:

1

Step-by-step explanation:

cos20 - cos70/sin70 - sin20

= cos(90-70) - cos(90-20)/sin70 - sin 20

= sin 70 - sin 20/sin 70 -- sin 20

= 1