If sin(2x + 7) = cos(4x - 7)º, what is the value of x?

x = 15°

Step-by-step explanation:

We are given;

sin(2x + 7) = cos(4x - 7)

We are required to solve for the value of x

Sin θ = Cos (90-θ) where, θ  and 90-θ are complementary angles.

(2x +7) + (4x - 7) = 90

 6x = 90

   x = 15°

Therefore, the value of x is 15°

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.

can i know which language is this?