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In △ABC, AB = 7 and AC = 17. Find m∠B to the nearest degree
68
38
21
87

In △ABC, AB = 7 and AC = 17. Find m∠B to the nearest degree 68 38 21 87-example-1

1 Answer

7 votes

Answer:

The m∠B is 68°

Explanation:

Given the right angled triangle ABC in which right angled is at A.

AB = 7 units and AC = 17 units

we have to find the measure of ∠B.

By trigonometric ratios,


cot \angle B=(AB)/(AC)


cot \angle=(7)/(17)


\angle B=cot^(-1)((7)/(17))


\angle B=67.619864948\sim 68^(\circ)

Hence, the m∠B is 68°

Option 1 is correct

User Jade Cowan
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