# Math Calculator & Tools

## Sum to Product Trigonometry Identities Calculator

**Trigonometry Identities Calculator**

This calculator is an online tool for for computing the sum of sine and cosine. Trigonometric identities are always hard to compute by our self and trigonometry has become an integral part of mathematics. This calculator serves to be very helpful tool in computing problems related to trigonometric sum to product identity. This identity was derived using prosthaphaeresis algorithm. This calculator accepts two angles as input and provides sum as output based on the option selected. Fill in the required field and get results at instants.

### Sum to Product Trigonometry Identities Calculation

Sum to product trigonometric identities:

sinu + sinv = 2 x sin(u+v/2) x cos(u-v/2)

sinu - sinv = 2 x cos(u+v/2) x sin(u-v/2)

cosu + cosv = 2 x cos(u+v/2) x cos(u-v/2)

cosu - cosv = -2 x sin(u+v/2) x sin(u-v/2)

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