Respuesta :

Answer:

sin 77° > cos 77°

Step-by-step explanation:

The cosine of 77 degree, [tex]\cos 77^\circ[/tex]

The sine of 77 degree, [tex]\sin 77^\circ[/tex]

In I quadrant sine and cosine both positive.

But sine is increasing curve and cosine is decreasing curve.

The intersection of sine and cosine at 45°

sin 45° = cos 45°

After intersection, if angle is increasing the value of sine is more than cosine.

  • sin 77° > sin 45°  ( because sine is increasing)
  • cos 77° < cos 45° ( because cosine is decreasing )

But sin 45° = cos 45°

Therefore, sin 77° > cos 77°

Hence, sine of 77 degree is larger than cosine 77 degree.

Answer:

cos 77=0.225

Step-by-step explanation:

sin 77=0.974