Math Is Fun Forum

niharika_kumar

Member

From: Numeraland

Registered: 2013-02-12

Posts: 1,062

trigonometry#2

if

then, find the value of

.

---

friendship is tan 90°.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,643

Re: trigonometry#2

hi

So

Note that 24 and 7 are the smaller two of a Pythagorean triple (like 3,4,5) so you can draw a right angled triangle with alpha in it and hence you can express any of the trig ratios using these numbers.

Bob

---

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

niharika_kumar

Member

From: Numeraland

Registered: 2013-02-12

Posts: 1,062

Re: trigonometry#2

the answer is 2, right?
I don't know what went wrong while i was making it because the question was quite simple.:)
It happens many times with me that i am able to solve the questions which other students find difficult but in a simple question, i go wrong.

---

friendship is tan 90°.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,643

Re: trigonometry#2

hi Niharika,

Oh!  You actually want me to work it out as well. 

But that means working with actual numbers.

Oh, OK.  As it's for you I'll do it.

.........................................

.........................................

.........................................

Yes, I make it 2 too. 

Bob

---

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

niharika_kumar

Member

From: Numeraland

Registered: 2013-02-12

Posts: 1,062

Re: trigonometry#2

thanks

---

friendship is tan 90°.