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Use the sum-to-product formulas to find the exact value of the expression.

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Use the sum-to-product formulas to find the exact value of the expression.

sin 75^o + sin 15^o

product-sum-formulas
trignometric-functions

asked Jan 22, 2015 in TRIGONOMETRY by anonymous

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1 Answer

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Step 1:

The expression is .

Using sum to product formula .

.

Solution:

.

answered Jan 23, 2015 by Sammi Mentor

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