Question

3tan25°tan40°tan50°tan65°_0.5tan2 60°÷4(cos2 29°+cos2 61°)

Answer 1

tan25=cot(90-25)

similarly

tan40=cot(90-40)

tan60=

$\sqrt{3}$

cos2 29=sin2 21

Applying suitable identities

Value=(3-(root)3)/4

Answer 2

Step-by-step explanation:

ans is 3/8

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