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mote1985 [20]
2 years ago
8

If sin 0 = 15/17 use pythagorean identity to find cos 0

Mathematics
2 answers:
Inga [223]2 years ago
8 0
Hello : 
sin<span>θ = 15/17
</span> use pythagorean identity : cos²θ +sin² θ = 1 
cos²θ =  1 - sin² θ
cos²θ = 1-(15/17)² 
cos²θ = 1- 225/289
cos²θ = 64/289
cos²θ = (8/17)²
cosθ = 8/17 or -8/17
kipiarov [429]2 years ago
4 0

Answer:

Cosine (theta) = plus or minus 8/17

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