Solve sin0^{circ}+cos270^circ+cos180^circ-tan180^circsin270^circ=

$$\sin 0 ^ { \circ } + \cos 270 ^ { \circ } + \cos 180 ^ { \circ } - \tan 180 ^ { \circ } \sin 270 ^ { \circ } =$$

Evaluate

$$-1$$

Solution Steps

Get the value of \sin(0) from trigonometric values table.

$$0+\cos(270)+\cos(180)-\tan(180)\sin(270)$$

Get the value of \cos(270) from trigonometric values table.

$$0+0+\cos(180)-\tan(180)\sin(270)$$

Add 0 and 0 to get 0.

$$\cos(180)-\tan(180)\sin(270)$$

Get the value of \cos(180) from trigonometric values table.

$$-1-\tan(180)\sin(270)$$

Get the value of \tan(180) from trigonometric values table.

$$-1-0\sin(270)$$

Get the value of \sin(270) from trigonometric values table.

$$-1-0\left(-1\right)$$

Multiply 0 and -1 to get 0.

$$-1-0$$

Subtract 0 from -1 to get -1.

$$-1$$