Question

If 1 -- cos = 2, then sind is equal to​

Answer 1

Step-by-step explanation:

1-cosd=2. (cosd=-1)

square it on both sides

1+cos²d-2cosd=4

cos²d=1

1-cos²d=0

sin²d=0

sind=0

Answer 2

Step-by-step explanation:

• Sine and cosine — a.k.a., sin(θ) and cos(θ) — are functions revealing the shape of a right triangle. Looking out from a vertex with angle θ, sin(θ) is the ratio of the opposite side to the hypotenuse , while cos(θ) is the ratio