Wednesday

March 4, 2015

March 4, 2015

Posted by **Trig** on Saturday, January 9, 2010 at 10:27am.

(1/cos)^2 times (1/tan)-(1/tan)=tan

(1/cos^2) times (-2/tan)=tan

(-2/cos^2tan)times tan=tan(tan)

sq. root of (-2/cos^2)= sq. root of (tan^2)

sq. root of (2i)/cos=tan

I'm not sure if I did this right. If I didn't, can you show me the correct steps?

Thanks, I appreciate it.

- Trig. -
**Marth**, Saturday, January 9, 2010 at 4:15pmsec^2(x)cot(x) - cot(x) = tan(x)

Convert everything to sine and cosine using the identity tan(x) = sin(x)/cos(x).

cos^-2(x)(cos(x)/sin(x)) - cos(x)/sin(x) = sin(x)/cos(x)

1/( cos(x)sin(x) ) - cos(x)/sin(x) = sin(x)/cos(x)

Note: it is important to write sin(x) as opposed to sin, because you may find equations that include different parameters -- sin(x) and sin(2x), for example.

**Answer this Question**

**Related Questions**

precalculus - For each of the following determine whether or not it is an ...

Integration - Intergrate ¡ì sec^3(x) dx could anybody please check this answer. ...

Trig - Given: cos u = 3/5; 0 < u < pi/2 cos v = 5/13; 3pi/2 < v < ...

Trigonometry desperate help, clueless girl here - 2. solve cos 2x-3sin x cos 2x...

Trigonometry - 1.Solve tan^2x + tan x – 1 = 0 for the principal value(s) to two ...

math - Use the exact values of the sin, cos and tan of pi/3 and pi/6, and the ...

Maths Calculus Derivatives - Find the first derivative for the following ...

trigonometry hlp me - 6.Prove that tan y cos^2 y + sin^2y/sin y = cos y + sin y...

Trigonometry - Please review and tell me if i did something wrong. Find the ...

more trig.... how fun!!!! - if you can't help me with my first question hopw you...