knuckleheadnell
New member
- Joined
- Dec 9, 2021
- Messages
- 1
The correct answer is A, but I do not know how to get that.
Trigonometric identities question
- Thread starter knuckleheadnell
- Start date
The correct answer is A, but I do not know how to get that.
D
Deleted member 4993
Guest
Can you express tan(x) in terms of sin(x) and cos(x) ?
Can you express tan(2x) in terms of tan(x) ?
pka
Elite Member
- Joined
- Jan 29, 2005
- Messages
- 11,971
This is a tricky numerical problem. May I suggest that you take note that [imath]\dfrac{\pi}{2}\le\theta\le\pi[/imath] so that [imath]\theta\in\text{I\,I}[/imath].
I would express [imath]\tan(2\theta)[/imath] in terms of [imath]\sin(\theta)~\&~\cos(\theta)[/imath].
I expect you to the other values.
P.K.Tandon
New member
- Joined
- Dec 24, 2021
- Messages
- 15
Last edited:
D
Deleted member 4993
Guest
It would be better if you could copy and past your attachment. We generally don't like to open unknown attachments.