IM DUMB,Need someone SMART to help with TRIGONOMETRY
1 answer:
Answer:
x = 65.4
The answer is 65.4 degrees.
Step-by-step explanation:
You can use either sine, cosine, or tangent to find the measure of angle x, but since the lengths of the adjacent leg and the hypotenuse are already given, cosine will be the easiest to use. The adjacent leg is 5 units long, and the hypotenuse is 12 units long.
Remember, cos(x) = adjacent / hypotenuse.
cos(x) = 5/12
( ) both sides
(cos(x)) =
(5/12)
Simplify ((cos(x)) ⇒ x)
x = (5/12)
Use calculator (make sure it is in degrees, not radians)
x = 65.37568165...
Round to the nearest tenth
x = 65.4
I hope this helps.
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Answer:
150° and 210°
Step-by-step explanation:
1) to drow a circle with radius=1 in the system of coordinates like in the attached picture;
2) to mark point (-√3/2)≈-0.866 on X-axis (in the picture it is the point M);
3) to graph line AB through point M, the line AB || Y-axis and the points A and B are on the circle with radius=1;
4) to measure the angles ∠ROA and ∠ROB (the points are marked with red colour);
5) finally, m(∠ROA)=150°; m(∠ROB)=210°.
