Math, asked by rajinipriyarajinipri, 10 months ago

tan48°tan16°tan42°tan74° = 1 .How??

Answers

Answered by Anonymous

2

Answer:

l.h.s = tan48°.tan16°.tan42°.tan74°

= tan(90°-42°).tan42°.tan(90°-74°).tan74°

= cot48°.tan42°.cot74°.tan74°

= 1×1 = 1 = r.h.s

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