evaluate tan 79° tan 34° tan 56° tan 11°
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Answer:
1
Step-by-step explanation:
tan79° tan11° tan34° tan 56°
= tan(90°-79°) tan 11° tan(90°-34°) tan 56°
= cot11° tan11° cot56° tan 56°
= (1/tan11°)× tan 11° × (1/tan56°)×tan 56°
=1×1
= 1 ..........
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