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2 months ago

Hi, please could someone help with this maths question:

In the triangle ABC, AB=7i+3j, AC=5i-4j.

a. Find the angle between AB and i.

b. Find the angle between AC and i.

c. Hence, find the size of angle BAC on degrees to 1 decimal place

In the triangle ABC, AB=7i+3j, AC=5i-4j.

a. Find the angle between AB and i.

b. Find the angle between AC and i.

c. Hence, find the size of angle BAC on degrees to 1 decimal place

Original post by itz_ebony_2023

Hi, please could someone help with this maths question:

In the triangle ABC, AB=7i+3j, AC=5i-4j.

a. Find the angle between AB and i.

b. Find the angle between AC and i.

c. Hence, find the size of angle BAC on degrees to 1 decimal place

In the triangle ABC, AB=7i+3j, AC=5i-4j.

a. Find the angle between AB and i.

b. Find the angle between AC and i.

c. Hence, find the size of angle BAC on degrees to 1 decimal place

I presume youve sketched it and marked on the right triangles to calc the stuff asked for? Upload what youve tried if you still have a problem.

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