Verify whether the pair can represent for some real angle

MATHEMATICS · Subjective · CBSE · Mathematics · Introduction to Trigonometry · Introduction to Trigonometry

Problem

Verify whether the pair

\left(\dfrac{7}{25},\,\dfrac{24}{25}\right)

can represent

(\sin\phi,\cos\phi)

for some real angle

\phi

. State your conclusion with reason.