Question

2 sin6°.sin66° sum or difference of trigonometric ratios​

Answer 1

Answer:

Step-by-step explanation:

y M. Bourne

The sine of the sum and difference of two angles is as follows:

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Tan of Sum and Difference of Two Angles

   sin(α + β) = sin α cos β + cos α sin β

   sin(α − β) = sin α cos β − cos α sin β

The cosine of the sum and difference of two angles is as follows:

   cos(α + β) = cos α cos β − sin α sin β

   cos(α − β) = cos α cos β + sin α sin β