batmanminecraft batmanminecraft
  • 18-10-2019
  • Mathematics
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In two or more complete sentences, explain why
cos(30°) + cos(60°) ≠ cos(90°)

Respuesta :

Padoru
Padoru Padoru
  • 18-10-2019

By using the 30-60-90 right triangle, or the unit circle, you can find (without a calculator) that

[tex]\cos30^o=\sqrt{3} /2[/tex]

[tex]\cos60^o=1/2[/tex]

[tex]\cos90^o=0[/tex]

Thus, cos(30°) + cos(60°) > cos(90°) and they are not equal to each other.

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