Question

What is the trigonometric ratio for cosD ? Enter your answer, as a simplified fraction, in the boxes.

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Answer 1

According to the above equations,
Cos D = 21/75 divide by 3 the numerator and the denominator
Cos D = 7/25

Good luck

Answer 2

Explanation:

Given: ΔDEF is a right angled triangle, right angled at E, DE=21, DF=75 and EF=72.

To find: The trigonometric ratio for cosD.

Solution: We are given that ΔDEF is a right angled triangle, the value of angle of cos is given as:

`CosX=(Base)/(Hypotenuse)`

In the given figure, corresponding to the angle D, the base is DE that is equal to 21 and the hypotenuse is DF that is equal to 75.

Therefore,

`CosD=(DE)/(DF)`

`CosD=(7)/(25)`

Thus, the trigonometric ratio for cosD is
`(7)/(25)`.