Question

Sin theta =0.766 then cos(90-theta

Answer 1

Answer:

given sintheta=0.766

cos(90-theta)=sintheta=0.766

Answer 2

Answer:

cos (90° - θ) = sin θ

cos(90-theta)=sintheta=0.766

Step-by-step explanation:

Given Sin theta =0.766

we know cos(90-θ) = sinθ

therefore cos(90-θ) = sin θ = 0.766

the sine of an angle equals the cosine of its complement.

Sine and Cosine are co-functions.

sin(θ)=cos(90−θ)

similarly ,

sin (90° - θ) = cos θ

cos (90° - θ) = sin θ

tan (90° - θ) = cot θ

csc (90° - θ) = sec θ

sec (90° - θ) = csc θ

cot (90° - θ) = tan θ

example: cos 30° = sin (90 - 60)°

             = cos 60°= √3/2