Question

Determine whether the statement is True or False.

The cotangent of four times an angle equals four times the cotangent of the angle?

Answer 1

False right?

Answer 2

yup

Answer 3

yes

Answer 4

Can the cotangent of four times and angle be found using trigonometric identities or by repeated application of the trigonometric sum formulas?

Answer 5

i guess you can find it using cot 4A = 1 + tan ^2 2A
---------
2 tan 2A

then use the formula for tan 2A

Answer 6

Thanks so much!

Answer 7

* i made an error in the above formula its (1 - tan^2 2A) / 2 tan 2A

yw