Request a call back

Can u pls give simplest way to solve solution to 3-d right triangles(trignometric ratios)?
Asked by | 15 Feb, 2009, 03:55: PM Expert Answer

Just remember that sin 30=1/2

then draw a right triangle , with one of the acute angles as 30 degrees.So the other acute angle has to be 60 degrees.

In the right triangle find the third side using pythagoras' theorem( two of the sides are 1x and 2x as sin 30 is 1/2)

the third side will come out to be square root 3 multiplied by x.

So now you can find the values for cos30, sin60, and tan 30, tan 60 easily looking at the triangle sides.

In the similar way, for 45 degrees, you can draw an iscoceles  right triangle .

So each of the acute angles willbecome 45 degrees.

So two sides have to be same .

Take them as x and x , then the third side will be root 2 multiplied by x.

Using the three sides you can easily find  t-ratios for 45 degrees.

If you want to know anything more, do get back to us.

Answered by | 16 Feb, 2009, 10:22: AM

## Concept Videos

CBSE 9 - Maths
Asked by Krishna962511 | 23 Jan, 2023, 10:41: AM ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by kbalanbiju | 18 Jan, 2023, 07:16: PM ANSWERED BY EXPERT
CBSE 9 - Maths
nh Asked by poonam.sps.2008 | 18 Jan, 2023, 06:26: PM ANSWERED BY EXPERT
CBSE 9 - Maths
find value  ANSWERED BY EXPERT
CBSE 9 - Maths
Simplify: (9/16)^3/2Ã(36/49)^5/2+(343/216)^-5/3 Asked by harisinhapala0 | 11 Jan, 2023, 05:21: AM ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by 16presa1186 | 09 Jan, 2023, 07:55: PM ANSWERED BY EXPERT
CBSE 9 - Maths
Class 9 Srijan Mathematics Ex-3.3 Q10 (a,b) Ans- 10/a -. 144 10/b -. -105/4 please Show All The Process Asked by anikk659 | 08 Jan, 2023, 03:41: PM ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by rajeshporwal02 | 07 Jan, 2023, 07:38: PM ANSWERED BY EXPERT
CBSE 9 - Maths
plz answer urgently dear experts lines and angles question : Asked by savitamahajan202 | 02 Jan, 2023, 10:55: AM ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by lalchandkundara17 | 30 Dec, 2022, 08:44: AM ANSWERED BY EXPERT