Answer:
3/5
Step-by-step explanation:
whoever answers right in the next five minutes get the brainiest thing
∠A = 106.3°, ∠B = 20.6°, ∠C = 53.1°
Step-by-step explanation:
In a ΔABC, the sides opposite to the angle A is a, angle B is b, and angle C is c. a = 60 , b= 22, c = 50
We can find any one angle by cosine rule,
a² = b² + c² - 2 bc cos (A)
60² = 22² + 50² - 2(22)(50) cos A
3600 = 484 + 2500 - 2200 cos A
3600 = 2984 - 2200 cos A
3600 - 2984 = -2200 cos A
616 = -2200 cos A
cos A = 616/ -2200 = -0.28
A = cos⁻¹ (-0.28) = 106.3°
Now we can use sine rule to find angle B as,
sin A/ a = sin B / b
sin 106.3° / 60 = sin B / 22
sin B = 22 × sin 106.3° / 60
B = sin⁻¹ (22 × sin 106.3° / 60 ) = 20.6°
As we know the sum of angles in a triangle is 180°.
∠A + ∠B + ∠C = 180°
106.3° + 20.6° + ∠C = 180°
126.9° + ∠C = 180°
∠C = 180° - 126.9° = 53.1°
Select the correct answer.
a)z greater than or equal to 5
b)z greater than or equal to 15
c)z greater than or equal to 14
d)z greater than or equal to 12
B. 3/20
C.1/10
D.4/153
census
random selection
voluntary response
Answer: random selection
Step-by-step explanation:
Given: 74 students were chosen from a local university to participate in a study. Every student attending the university had an equal possibility of being chosen.
Since we know that only in random selection the participants have the equal probability to get selected.
Hence, the sampling method used her is random sampling.