Question

Use the relationship between the sine and cosine functions To fill in each blank

sin 70° = cos(_ - 70°)

Answer 1

Answer:

sin 70° = cos (90° - 70°)

Step-by-step explanation:

You need to use the trigonometric ratios which states that:

sin α = cos (90° - α)

sin 70° = cos (90° - 70°)

sin 70° = cos 20°