If $\sin A:\sin B:\sin C = 3:4:5$, then $\cos A:\cos B$ is equal to

JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

1 Easy

1 of 1

Application +4 | -1

\sin A:\sin B:\sin C = 3:4:5

, then

\cos A:\cos B

is equal to

View answer and explanation

Correct option: A

4:3

The correct answer is

4:3

because it is obtained by using the sine rule to find the ratio of sides and then applying the cosine rule to determine the ratio of

\cos A

\cos B

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{p_1},{p_2},{p_3}

\Delta \;ABC

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\Delta

\Delta \;ABC

\tan A

A

2 s