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The question is wrong. Plz correct it.
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tan65 - tan40 = tan 25 + tan 40 .
using tanA - tan B =sin(A - B)/cosAcosB and tanA + tan B
= sin( A + B)/cosAcosB
= we get :: to prove sin 25/ cos65
= sin65 / cos25 sin 25 = cos (90 - 25)
= cos 65 and sin 65
= cos (90 - 65)
= cos 25
hope this helps ....
make this as brainlist answer ^_^❤
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