Question

sinØ= cos(90-Ø)
i said its false but im nt sure

Answer 1

That is true. :)

Answer 2

its not false?

Answer 3

it is not false.

Answer 4

thank youuu :)

Answer 5

nothing for me?

Answer 6

i just have one question the 0 i think its called thetha i dnt get the concept of that :/

Answer 7

it is called theta

Answer 8

@primeralph
lol what do u want

Answer 9

@nisa never mind.

Answer 10

lol i wish they d let us give more medals

Answer 11

\(\cos(A-B)=\cos A\cos B+\sin A\sin B\)
\(\cos(90-\theta)=\cos90\cos\theta+\sin90\sin\theta\)
\(\cos90=0\) and \(\sin90=1\)
\(\cos(90-\theta)=0\cos\theta+1\sin\theta\)
\(=0+\sin\theta\)
\(=\sin\theta\)

Answer 12

wow thanks thats a very detailed answer and very clear

Answer 13

Welcome:)

Answer 14

:)