Answer:
the required graph is in the attachment.
Step-by-step explanation:
Answer:
its A and C , Obtuse and Isosceles triangle.
Step-by-step explanation:
It's A because it's obtuse ( triangle which have measurement between 90 and 180)
Not B because Scalene triangle have three different side but the two sides are same show by the equilateral symbol.
It's C because Isosceles triangle have two sides of equal length that we can see with the equilateral symbol.
Not D because Equilateral triangle have three sides of same length but on this triangle only two sides are same.
Not E because right angle have measurement of 90 degree.
Not F because Acute triangle have measurement less than 90 degree.
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Answer:
a) x=
10°
50°
130°
10°
50°
130°
170°
250°
290°
b) x=
90°
210°
330°
Step-by-step explanation:
2 sin (3x) = 1
a) look at the graph, y=1 when x is near:
10°, 50°, 130°, etc
in the equation: 2 sin (3x) = 1 ⇒ sin (3x) = 0.5 ⇒ 3x = 30° (and others) ⇒ x = 10° (and others). So the values given in solution (10°, 50°, 130°, etc) are true
b) is evident
CPCTC?
Corresponding parts of congruent triangles are congruent
When?
<u>U</u>sed when you want to prove that 2 sides, angles, or triangles are the same.
