Question

Could someone help me please ?

Answer 1

Add the 2 numbers up together. Thatś how I have learned to do it anyway. maybe someone else has something different.

Explanation:

Answer 2

19.4 (rounded to 3 significant figures)

Explanation:

SOH CAH TOA

You would use CAH for this question because you are told to find the length for BC, which is the hypotenuse and you are told the adjacent line is 6.3cm.

H=A÷C

=6.3÷cos(71)

=19.3507869666

H=19.4 (rounded to 3 significant figures)