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42 votes
42 votes
If cosθ=3√/2 which of the following could also be true?θ=−π6theta is equal to negative pi over 6tanθ=1tangent theta is equal to 1sinθ=0sine theta is equal to 0cos−1θ=π6didn't mean to select an answer yet on my homework sorry

If cosθ=3√/2 which of the following could also be true?θ=−π6theta is equal to negative-example-1
User Waterschaats
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1 Answer

12 votes
12 votes

Answer:

θ = -π/6

Step-by-step explanation:

We know that cosine is an even function, so

cos(-π/6) = cos(π/6)

Since cos(π/6) = √3/2, then

cos(-π/6) = √3/2

Therefore, when cosθ = √3/2, θ could be -π/6

So, the answer is

θ = -π/6

User Mohyaddin Alaoddin
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2.9k points