Løs tan20^{circ}+tan72^{circ}+tan88^circ=tan20^circ*tan72^circ*tan88^circ

$$\tan 20 ^ { \circ } + \tan 72 ^ { \circ } + \tan 88 ^ { \circ } = \tan 20 ^ { \circ } \cdot \tan 72 ^ { \circ } \cdot \tan 88 ^ { \circ }$$

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Løsningstrinn

Evaluate trigonometric functions in the problem

$$0,36397023426620234 + 3,0776835371752527 + 28,636253282915515 = -0,8703214691344587$$

Legg sammen 0,36397023426620234 og 3,0776835371752527 for å få 3,44165377144145504.

$$3,44165377144145504+28,636253282915515=-0,8703214691344587$$

Legg sammen 3,44165377144145504 og 28,636253282915515 for å få 32,07790705435697004.

$$32,07790705435697004=-0,8703214691344587$$

Sammenlign 32,07790705435697004 og -0,8703214691344587.

$$\text{false}$$