Question

Solve it guys plz. It's urgent ​

Answer 1

Answer:

Step-by-step explanation:

67°27'=67° +27'

1°=60'

1'=1/60°

24'=24/60°

=67°+24/60°

sin(90-θ) =cos(θ)

sin(90-67-24/60)= cos(67°24')

sin(22°+1°-24/60°)= cos(67° 24')

sin(22+36/60)

sin(22°36') =cos(67°24')

82°36'=82°+36/60°

cos(82°36')= sin(90-82-36/60)

=sin(7+1-36/60)

=sin(7+24/60)= sin(7°24')

sin(22°36')cos(7°24")+sin(7°24')cos(22°36')

=sin(22+36/60+7+24/60)

sin(30)=1/2

hence proved