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svetoff [14.1K]
3 years ago
12

How can I solve these problems

Mathematics
2 answers:
telo118 [61]3 years ago
8 0
For the first 6 problems you need to know that all the angles in a triangle are equal to 180°.

for example: #1

60 + 75 + x = 180
x = 180 - (60 + 75)
x = 180 - 135
x = 45°

for numbers 7 and 8, you just need to know that vertical angles are equal to each other.

for example: #7

3x = 45°
x = 45 ÷ 3
x = 15°

for number 9, you need to know that those to angles add up to give you 180° because lines are 180°.

for example: #9

5x + 12 + 68 = 180°
5x + 80 = 180
5x = 180 - 80
5x = 100
x = 100 ÷ 5
x = 20°

I really hope that this made sense to you and that this actually helped you.
KATRIN_1 [288]3 years ago
4 0

Answer:


Step-by-step explanation:

Easy the three angles of a triangle equal 180 degrees

so 60+75 = 135 --> 180-135=

1) 145

2) 35

3)  no since the tops a 100 and its a Isosceles triangle two corners left it be 40 for each corner

4) 34 for both x's cause 34+34+112. = 180

5) 180- 120= 60- 10 = 50/4 is (12.5)= x

6) x = 15 cause it be 120- 60 to get 60

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A right angled triangle can be solved if at least one side and an angle are available. In this question we shall apply the trigonometric ratios since we have one angle which shall be the reference angle (43°). Also we have an hypotenuse (the side facing the right angle) and an unknown side which is the adjacent (which lies between the right angle and the reference angle).

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