Question

if sin theta =cos(theta-45degree) where theta and theta-45 degree are acute angles find theta​

Answer 1

Answer:

67.5˚

Step-by-step explanation:

sinθ=cos(θ-45˚)

cos(90˚-θ)=cos(θ-45˚)

Then,

90˚-θ=θ-45˚

2θ=135˚

∴θ=67.5˚