Question

if sin (A-B)=sinA cosB-cosA sinB and cos(A-B)=cosA cosB+sinA sinB find the value of sin 15 and cos 15​

Answer 1

Answer:

this question is related from trigonometry.

Step-by-step explanation:

sin 15° = sin (45°-30°)

= sin45° cos30° - cos45° sin 30°

= 1/√2 x √3/2 - 1/√2 x 1/2

= √3-1 /2√2

similarly cos 15° = √3-1/2√2

I Hope its helpful to you .....