Question

$\cos A$ is the abbreviation used for the cosecant of angle A
A.True
B.False

Answer 1

Hint:We should remember the abbreviation of all trigonometric ratios. In the question it is known that abbreviation of $\cos ecantA = coescA$ ,$\cos ineA = \cos A$.

Complete step-by-step answer:
In this question we can see that abbreviation of $\cos ecantA = coescA$ and $\cos ineA = \cos A$
So we can see that clearly the given statement $\cos A$ is the abbreviation used for the cosecant of angle A is false.
Hence option B is the correct answer.

Note: For solving these types of questions we should know abbreviations of all basic trigonometric functions. Some trigonometry abbreviation is
$
  \operatorname{sine} A = \sin A \\
  \cos inA = \cos A \\
  \tan gentA = \tan A \\
  \cot angentA = \cot A \\
  \cos ecantA = \cos ecA \\
  \sec antA = \sec A \\
 $