Hindi, asked by rk4690546, 7 months ago

tan 10° tan 15° tan 75º tan 80º = ?

Answers

Answered by sinturanjan928

2

tan10°.tan15°. tan75° . tan80°

= (tan10°. tan80°)(tan15°.tan75°)

= (tan10°. cot10°)(tan15°.cot15°)

= 1 × 1 = 1

[tan(90° – θ) = cotθ; tanθ . cotθ = 1]

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