Subject :Maths Class : Class 10

**Passage-III :** An equation involving trigonometric ratios of an angle θ is a trigonometric identity. If the L.H.S. of the equation = R.H.S. of the equation for all values of θ such that

sin θ sin (60° - θ) sin (60° + θ) =

cos θ cos (60° - θ) cos (60° + θ) =

The value of sin 20° sin 40° sin 60° sin 80° is equal to

A

B

C

D

Tell