Question

2sin6°sin66
please solve this problem​

Answer 1

Answer:

I have done almost same question in my practice copy

Step-by-step explanation:

hope it will help you

Answer 2

Answer:

Step-by-step explanation:

2 \sin(6) \sin(66)2sin(6)sin(66)

= \cos(6 + 66) + \cos(6 - 66)=cos(6+66)+cos(6−66)

= \cos(72) + \cos( - 60)=cos(72)+cos(−60)

= \cos(72) + \cos(60)=cos(72)+cos(60)

= \cos(72) + \frac{1}{2}=cos(72)+

2

1

Here's your ans.