If x = tan 40°, then the value of 2 tan 50° will be :
Answer & explanation
Correct answer: option 4
tanA = cotB then A + B = 90°
Now,
2tan50°
= 2 tan ( 90° - 50° )
= 2cot 40°
= 2 × \(\frac{1 }{x}\)
= \(\frac{2 }{x}\)
If x = tan 40°, then the value of 2 tan 50° will be :
Correct answer: option 4
tanA = cotB then A + B = 90°
Now,
2tan50°
= 2 tan ( 90° - 50° )
= 2cot 40°
= 2 × \(\frac{1 }{x}\)
= \(\frac{2 }{x}\)