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Leni [432]
3 years ago
7

Sin 42° = Then cos =

Mathematics
2 answers:
Gre4nikov [31]3 years ago
8 0
Cos = 48 I hope it's correct
kobusy [5.1K]3 years ago
7 0
Sin θ = cos (90 - θ)

sin 42 = cos (90 - 42)

sin 42 = cos 48
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8 0
4 years ago
Consider the quadratic equation x2 = 4x - 5. How many solutions does the equation have?
JulijaS [17]

Answer:

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Step-by-step explanation:

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  (x -2)^2 = -1 . . . . . . . . . show the left side as a square

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_____

<em>Comment on the question</em>

Every 2nd degree polynomial equation has two solutions. They may be real, complex, or (real and) identical. That is, there may be 0, 1, or 2 real solutions. This equation has 0 real solutions, because they are both complex.

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264 jumps in 4 minutes 132 jumps in 2 minutes 66 jumps in 1 minute
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3 years ago
Read 2 more answers
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