Question

The value of ( sin^2 45° + tan^2 45° - sec^2 45° ) equal to : *​

Answer 1

Answer:

1/2

What is the value of cos squared 45? cos^2 45 = 1/2.

The sine is defined as the ratio between the opposed side and the hypothenuse. Therefore, sin45o=1√2=√22 . In decimal form, it is roughly 0.7071067812 .

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