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krok68 [10]
3 years ago
15

A right triangle in which one acute angle is a reference angle for a 75° angle in standard position intersects the unit circle a

t (0.259,0.966). What is the approximate value of cos75°

Mathematics
1 answer:
vampirchik [111]3 years ago
7 0

Alright, lets get started.

Please take a look at the diagram attached.

The reference angle of 75 will be 75

As it is mentioned that the angle intersects the unit circle means r = 1

So, finding cos

cos 75 = \frac{X}{r}

cos 75 = \frac{0.259}{1}

cos 75 = 0.259    :   Answer

Hope it will help :)


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