Question

if costheta+sintheta=(2)^1/2 costheta, then (costheta-sintheta)=?
a.(2)^1/2 costheta
b..(2)^1/2 sintheta
c..2 costheta
d.2 sintheta

Answer 1

Have you tried to solve this question?

Answer 2

no

Answer 3

Do you know basic trigonometry?

Answer 4

explaim me this question

Answer 5

In this question you have to find value of (costheta - sintheta) from given value of (sintheta + costheta).

Answer 6

explin mw in written

Answer 7

what is mw?

Answer 8

explain me in written

Answer 9

For this question you first need to square costheta + sintheta=(2)^1/2 costheta
Can you tell me what it will be?

Answer 10

1+2sinthetacostheta=2costheta^2

Answer 11

yes

Answer 12

Now take 2sinthetacostheta to the right hand side.

Answer 13

Can you tell me what the equation will be now?

Answer 14

1=2costheta(costheta-sintheta)

Answer 15

Now you have got (costheta-sintheta) in your equation. Isolate it.

Answer 16

please explain next in written

Answer 17

(costheta-sintheta) = 1/2costheta