In ( DEF ) right-angled at E, DE = 7 cm and EF = 24 cm

MATHEMATICS · Single correct · CBSE · Mathematics · Introduction to Trigonometry · Introduction to Trigonometry

Problem

\triangle DEF

right-angled at E, DE = 7 cm and EF = 24 cm. Calculate

\cos D

. (a)

\dfrac{7}{24}

(b)

\dfrac{24}{25}

(c)

\dfrac{7}{25}

(d)

\dfrac{7}{17}