If 5x-2y-7=0 is changed into the form x ...

If 5x-2y-7=0 is changed into the form `x cos alpha + y sin alpha = p`, then `cos alpha` is

A

`5/sqrt(29)`

B

`sqrt(5/29)`

C

`(-5)/sqrt(29)`

D

`(-2)/sqrt(29)`

Verified by Experts

The correct Answer is:

A

Similar Questions

Explore conceptually related problems

The angle between the lines x cos alpha + y sin alpha = a and x sin beta - y cos alpha = a is

If sin 3 alpha =4 sin alpha sin (x+alpha ) sin(x-alpha ) , then

The circle on the chord x cos alpha + y sin alpha -p= 0 of the circle x^2 + y^2 - 2 = 0 as diameter is:

The length of the perpendicular from the point (a cos alpha, a sin alpha) upon the line y=x tan alpha+c, c le 0, is

Prove that the distance of the point (a cos alpha, a sin alpha) from the origin is independent of alpha

Prove that sin^(4) alpha + cos^(4) alpha + 2 sin^(2) alpha cos^(2) alpha = 1 .

If A=[(0,-tan (alpha/2)),(tan (alpha/2),0)] and I is 2 xx 2 unit matrix, then (I-A)[(cos alpha,-sin alpha),(sin alpha, cos alpha)] is

The expression nsin^(2) theta + 2 n cos( theta + alpha ) sin alpha sin theta + cos2(alpha + theta ) is independent of theta , the value of n is