Evaluate tan10tan15tan75tan80.
Answers
Answered by
0
Answer:
2.10222656902
Step-by-step explanation:
Answered by
0
Answer:
1
Step-by-step explanation:
Because,
tan10 =tan(90-80)=cot80
tan 15 =tan(90-75)=cot75
so, cot80×tan80×cot75×tan75= 1
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