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Ira Lisetskai [31]
3 years ago
7

Θ lies in Quadrant II . sinθ=47sinθ=47 What is the exact value of cosθ in simplified form?

Mathematics
1 answer:
Pepsi [2]3 years ago
4 0
I am assuming you mean 4/7 as the sine or cosine cannot be higher than 1.

Lets find <span>θ,
</span>
θ = [sin-1](4/7) = 34.85 °

But lets take into account that this value is the equivalent in Quadrant I.

If Θ lies in Quadrant II , then θ = 180 ° - 34.85 ° = 145.15 °

So cosθ = cos (145.15) = -0.821
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