Answer:
Cos theta = sin(90-theta)
so cos 71 = sin(90-71)
cos 71 = sin( 19)
Therefore the answer = sin(19) = 0.14987720966
Hope it helps
Answer:
Vertical angles
Step-by-step explanation:
Answer:
bonk
Step-by-step explanation:
Answer:
To find f-¹(x) of f(x) equate f(x) to y
That's
f(x) = y
So we have

Next interchange the variables that's x becomes y and y becomes x
That's

Next make y the subject
Cross multiply
We have
4y - 7 = 10x
Move -7 to the right side of the equation
4y = 10x + 7
Divide both sides by 4
We have the final answer as

So

Hope this helps you
The answer is 657000 because 1000x.9 is 900x730(which is what 2 years is like in days)