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2. Show that (1) tan 48° tan 16° tan 42° tan 74° = 1 (ii cos36° cos 54º - sin36º sin 54°=0.​
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2.

Show that
(1)
tan 48° tan 16° tan 42° tan 74° = 1
(ii
cos36° cos 54º - sin36º sin 54°=0.​

User DotNetkow
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1 Answer

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Step-by-step explanation:

this question is from which grade or class

User Danno
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