Question

Simplify root(1-sintheta)(1+sintheta)

Answer 1

\[\sqrt{(1-sin{\theta})(1+sin{\theta})}\] ?

Answer 2

Is that what you meant?

Answer 3

Yup

Answer 4

±sin θ
cos θ
±tan θ
square root sine theta

Answer 5

those are the answerscan u help me

Answer 6

\(\sqrt{(1-sin{\theta})(1+sin{\theta})}\)
\(\sqrt{(1-sin^2{\theta })}\)
But \(cos^2{\theta} + sin^2{\theta} = 1\), then
\(\sqrt{cos^2{\theta}}\)
\(\pm cos{\theta}\)

Answer 7

so would the answer be costheta only

Answer 8

yes

Answer 9

omg thank you can u help me with one more only

Answer 10

sure^^

Answer 11

@M4thM1nd

Answer 12

\(cos(x-\pi/2) = sin(x)\) and
\(sin(x - \pi/2)=-cos(x)\)

Answer 13

So, which one you think is the right answer?

Answer 14

1st one

Answer 15

i think ... idk

Answer 16

No. From the graph we see that f(x) at x = 0 is 0, that means f(x) is some function of sin(x), since sin(x) at x = 0 is 0

Answer 17

so the answer is a

Answer 18

In that case, the first one we have \(sin(x-\pi/2) = -cos(x)\), so that can't be the right answer

Answer 19

okay the right answer is ...

Answer 20

If we check the last option, we have \(cos(x-\pi/2) = sin(x)\), but from the graph we also get the information that f(x) at x = pi/2 is equal to -4. But sin(x) at x = pi/2 is equal to 1. That tells us that we need a -4 multiplying this sin(x). So... The last option is the correct answer

Answer 21

do you understand?