What is the range of the data below?
2 answers:
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<span>sin can be positive in 1st and 2nd quadrants.
cos can be negative in 2nd and 3rd quadrants.</span>
cos can be negative in 2nd and 3rd quadrants.</span>
Answer:
x ≈ 48.2°
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos x = =
, then
x = (
) ≈ 48.2° ( to the nearest tenth )
If you expand the square, you have
Simplify the right hand side:
Cancel the -3x appearing on both sides:
Multiply both sides by 4:
Consider the square root of both terms (using the doubles sign):