Question

sin (45° + θ) – cos (45° – θ) = ?

पर्याय

• 0

• 1

• 2

• –2

Answer 1

0

Explanation:

Given expression = cos {90° – (45° + θ)} – cos (45° – θ) 

= cos (45° – θ) – cos (45° – θ) 

= 0