Question

If 0 = 45°, then verify
(i) sin 0 = cos (90 - 0) &
(ii)cos 0 = sin (90 -- 0)​

Answer 1

Step-by-step explanation:

sin(A+B)=1 Given

we know sin(

2

π

)=1

∴A+B=

2

π

cos(A−B)=1 Given

we know cos(0)=1

∴A−B=0

A=B

A+A=

2

π

⇒A=

4

π

=B.