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tigry1 [53]
3 years ago
12

Write an expression for cos 68° using sine

Mathematics
1 answer:
Anettt [7]3 years ago
8 0

Answer:

sin22°

Step-by-step explanation:

Using the cofunction identity

cos x = sin (90 - x), then

cos68° = sin(90 - 68)° = sin22°

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