Question

if the angle between the two vectors is obtuse then _____ is positive.
a) -sin
b) sin
c) -cos
d) cos​

Answer 1

Answer:

Option B, sin will be positive.

Hope you find it useful.

Lil-Zyush :-)

Answer 2

If the angle between two vectors is obtuse then sin will be positive.

correct option is (b).

Step-by-step explanation:

acute angle value<90°

right angle=90°

Obtuse angle greater than 90° and lower than 180°.

The obtuse angle lies in second quadrant as per the cartesian coordinate plane.

And the value of sin and cosec in the 2nd quadrant is positive .

So, sin of any obtuse angle is positive.(answer)