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Bingel [31]
3 years ago
14

Write the expression in terms of cosine. Please help.

Mathematics
2 answers:
LuckyWell [14K]3 years ago
7 0

Answer:

cos60°

Step-by-step explanation:

Using the cofunction identity

sinx° = cos(90 - x)°

sin30° = cos(90 - 30)° = cos60°

Vladimir [108]3 years ago
5 0

I would assume that they want a cosine value that would give the same answer. sin(30°) is equal to 1/2

Therefore cos(×) = 1/2

x = arccos(1/2)

x=60

cos(60°)

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