IF the lengths of the side of triangle are `3,5 and 7,` then the largest angle of the triangle is `pi/2` (b) `(5pi)/6` (c) `(2pi)/3` (d) `(3pi)/4`

If the lengths of the sides of a triangle are 3, 5, 7 , then its largest angle of the triangle is

In the sides of a triangle are in the ratio 1:sqrt(3):2, then the measure of its greatest angle is (a) pi/6 (b) pi/3 (c) pi/2 (d) (2pi)/3

In a A B C , if (c+a+b)(a+b-c)=a b , then the measure of angel C is pi/3 (b) pi/6 (c) (2pi)/3 (d) pi/2

The distance of a point on the ellipse (x^2)/6+(y^2)/2=1 from the center is 2. Then the eccentric angle of the point is pi/4 (b) (3pi)/4 (c) (5pi)/6 (d) pi/6

If hat a , hat b ,a n d hat c are three unit vectors inclined to each other at angle theta, then the maximum value of theta is pi/3 b. pi/4 c. (2pi)/3 d. (5pi)/6

In a right angled triangle the hypotenuse is 2sqrt(2) times the perpendicular drawn from the opposite vertex. Then the other acute angles of the triangle are (a) pi/3a n dpi/6 (b) pi/8a n d(3pi)/8 (c) pi/4a n dpi/4 (d) pi/5a n d(3pi)/(10)

In a triangleA B C ,/_B=90^0 and b+a=4. The area of the triangle is maximum when /_C is (a) pi/4 (b) pi/6 (c) pi/3 (d) none of these

In triangle ABC, angle A is greater than angle B. If the measure of angles A and B satisfy the equation 3sinx-4sin^3x-k=0 . Find the value of angle C (A) pi/3 (B) pi/2 (C) (2pi)/3 (D) (5pi)/6

cos^-1 {-sin((5pi)/6)}= (A) - (5pi)/6 (B) (5pi)/6 (C) (2pi)/3 (D) -(2pi)/3

The angle between the tangents to the curve y=x^2-5x+6 at the point (2, 0) and (3, 0) is pi/2 (b) pi/3 (c) pi (d) pi/4