Ah! Thanks, proyaop! (and Tiggsy) That makes sense. Thanks for all your help!
3 + 8(2) - 7
= 3 + 16 - 7
= 19 - 7
= 12
Hope this helped!
Thanks for all of your answers/suggestions! It helped me greatly!
Oops! I meant to say - [15/65 - 4.12/65], not −(65/15 − 65/4.12)!
We know that the cosine of A+B [cos(A + B)] is equal to -1 times cosC.
Moreover -1 times cosC is equal to cosA.cosB−sinA.sinB
Therefore,
=−(65/15−65/4.12)
= -(15 - 48) / 65 = 33/65
Hope this helped, and have a great day!
