tan 20 * tan 70 = 1 prove
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Answered by
2
Answer:
tan20=cot70 so putting this in above
cot70×tan70 =1
Answered by
9
Step-by-step explanation:
LHS= tan 20× tan 70
=cot(90-20)×tan70
=cot70*tan70
=1/tan70 × tan70
=1
=RHS
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