Question

what is the value of cos 45 °​

Answer 1

Answer:

cos 45° = 1/√2

Extra information:

Sin 45° = 1/√2

Tan 45°= 1

Answer 2

Step-by-step explanation:

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what is the value of cos 45 °

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Cos 45° Value

The exact value of cos 45 degrees is 1/√2 (in surd form), which is also equal to sin 45 degrees. It is an irrational number, equal to 0.7071067812… in decimal form. The approximate value of cos 45 is equal to 0.7071.

Cos 45° = 1/√2 = √2/2