In right triangle LMN, L and M are complementary angles and sin(L) is 19/20. What is cos(M).
A. 19/20
B.
C. 1/20
D.

Option A:

Solution:

The image of the triangle is attached below.

Given data:

Using trigonometric ratio formulas,

So, MN = 19 and LM = 20

Using Pythagoras theorem,

In right triangle, square of the hypotenuse is equal to the sum of the squares of the other two sides.

Subtract 361 from both sides,

39 = LN²

Taking square root on both sides,

Hence option A is the correct answer.

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

5 pm

step-by-step explanation: