Math, asked by trishajakka, 7 months ago

Express the following as sum or difference of trigonometric ratios
CHALLENGERS
a) 2 sin 6º sin 66

Answers

Answered by sidd5449

0

Answer:

cos60-cos72

Step-by-step explanation:

Use the formula

-2sinA*sinB= cos(A+B) - cos(A-b)

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