Trigonometry

A, B & C form the vertices of a triangle.
∠
CAB = 90°,
∠
ABC = 66° and AB = 9.5.
Calculate the length of AC rounded to 3 SF.

Knowing angle CAB is 90 degrees you can infer that this is a right angled triangle

So what u should do is draw out the outline of a right angle triangle and then use the information to fill out the sides e.g. label AB as 9.5 units and the angle ABC as 66 degrees.

Now u can use SOH CAH TOA to find the length of AC

Hope this is clear, if your still struggling with it I can draw out the triangle for u

REMOVE - you are breaking forum rules @astridreadsbooks

(edited 11 months ago)

astridreadsbooks

Original post by Muttley79

REMOVE - you are breaking forum rules @astridreadsbooks

deleted it. sorry, wasn't aware about the forum guidelines :frown:

:frown:

Original post by astridreadsbooks

deleted it. sorry, wasn't aware about the forum guidelines :frown:

:frown:

We just give hints :smile:

:smile:

astridreadsbooks

Original post by Muttley79

We just give hints :smile:

:smile:

also, where can I check guidelines of a forum?

Original post by astridreadsbooks

also, where can I check guidelines of a forum?

Maths forum:
https://www.thestudentroom.co.uk/showthread.php?t=4919248

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