Question

Trigonometric Equation
2cosA - 3tanA = 0

Answer 1

write tan as sin/cos

Answer 2

Okay. I will try that

Answer 3

then it will become similar to your previous question

Answer 4

But there's sin this time

How's that?
@hartnn

Answer 5

previous to previous,
similar to the one that had cos^2 A and sin A

Answer 6

But this has no square root @hartnn

Answer 7

http://openstudy.com/users/kaylala#/updates/52ec9b98e4b0cdd2a983b48d
same formula you need to use

Answer 8

I got nothing. REally sorry
@hartnn

Answer 9

2c -3t =0

2c -3s/c =0

2c^2 -3s =0

use c^2+s^2 =1

Answer 10

2c^2 -3s =0
How did you get that?

Answer 11

multiplying c on both sides

Answer 12

Okay

Answer 13

Will it be x^2+3x+2?

Answer 14

x^2+3x-2=0
isn't it ?

Answer 15

Oh houre right

Answer 16

*you're

Answer 17

What's next?
I really dont know

Answer 18

@hartnn ^

Answer 19

solve the quadratic eq.

Answer 20

Right. Just a moment

Answer 21

X= (-3+-√(17))/2

Is that correct?

Answer 22

the quadratic eq. should be
2x^2+3x-2=0

Answer 23

Oh my bad

Answer 24

Let me try again

Answer 25

A=30,150

Is that it?

Answer 26

@hartnn

Answer 27

Sin A =-2
Has no solution
Right?

Answer 28

yes, correct
30,150 also correct :)

Answer 29

Great help. Thanks again @hartnn