3sino - 3sine
-3cose + 3cos e
cose
sino
3cos (1-cos?0) 3sino (1-sin'e )
sin e
+
cos e
= 3 sin20 + 3 cos20
= 3(sinde + cos20)
= 3(1) = 3 = R.H.S.
Ex. 5) Prove that tan5A + tan3A -4cosA.cos 4A
tan5 A-tan3A
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wah wah questions hai ya answer koi to Bata doo
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