prove sin 39°/cos 51°+sin 51°/cos 39°
= 2.
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Step-by-step explanation:
(sin 39° / cos 51°) + (sin 51° / cos 39°)
= {sin 39°/ sin (90 - 51)°} + { cos (90 - 51)°/cos 39°}
= (sin 39°/sin 39°) + (cos 39°/cos 39°)
= 1 + 1
= 2
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