Solve cos(265)*sin(355)-sin(85)*cos(175)

$$\cos ( 265 ) \times \sin ( 355 ) - \sin ( 85 ) \times \cos ( 175 )$$

Evaluate

$$0.99999999999999995508137308789939$$

Solution Steps

Evaluate trigonometric functions in the problem

$$-0.08715574274765825 \cdot -0.08715574274765832 - 0.9961946980917455 \cdot -0.9961946980917455$$

Multiply -0.08715574274765825 and -0.08715574274765832 to get 0.00759612349389598974223785112914.

$$0.00759612349389598974223785112914-0.9961946980917455\left(-0.9961946980917455\right)$$

Multiply 0.9961946980917455 and -0.9961946980917455 to get -0.99240387650610396533913523677025.

$$0.00759612349389598974223785112914-\left(-0.99240387650610396533913523677025\right)$$

The opposite of -0.99240387650610396533913523677025 is 0.99240387650610396533913523677025.

$$0.00759612349389598974223785112914+0.99240387650610396533913523677025$$

Add 0.00759612349389598974223785112914 and 0.99240387650610396533913523677025 to get 0.99999999999999995508137308789939.

$$0.99999999999999995508137308789939$$