The cosine of an acute angle in a right triangle <span> is the ratio of the length of the adjacent side to the length of the hypotenuse.
</span>If cos(x)=1/2, then:
the adjacent side = 1
the hypotenuse = 2
<span>By the Pythagorean theorem:
</span>the opposite side = √(2² - 1²) = √(4-1) = √3
The sine<span> of an angle is the ratio of the length of the opposite </span>side<span> to the length of the hypotenuse, so:
</span>sin(x) = opposite/hypotenuse = √3/2
The tangent<span> of an angle is the ratio of the length of the opposite side to the length of the adjacent side:
</span>
tan(x) = opposite/adjacent =√3/1 = √3
Answer:
1 has 1 solution
2 has one solution
3 has no solutions The lines are parallel
Complementary angles total 90°.
∠A + ∠B = 90°
∠A + 60° = 90° . . . . substitute the given information
∠A = 30° . . . . . . . . . subtract 60° from both sides of the equation
The angle that is complementary to ∠B measures 30°.
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A y=sin x maybe I am sorry