Solve sin20^circcos90^circtan30^circ=

$$\sin 20 ^ { \circ } \cos 90 ^ { \circ } \tan 30 ^ { \circ } =$$

Evaluate

$$0$$

Solution Steps

Evaluate trigonometric functions in the problem

$$0.3420201433256687 \cos(90) \tan(30)$$

Get the value of \cos(90) from trigonometric values table.

$$0.3420201433256687\times 0\tan(30)$$

Multiply 0.3420201433256687 and 0 to get 0.

$$0\tan(30)$$

Get the value of \tan(30) from trigonometric values table.

$$0\times \frac{\sqrt{3}}{3}$$

Anything times zero gives zero.

$$0$$