Answer: 2 + 1 = 3 2 x 1 =2
Step-by-step explanation: + 7 = 7
I think it is false, because you can have a contradicting statement to a true statement
I believe the answer for 17 is C. 18 I am not sure how to do. For 19, however, the answer is B. Hope I help, and sorry I can't answer 18.
Answer:
See below in bold.
Step-by-step explanation:
cos 150 = - cos(180 - 150)
= - cos 30
= -√3/2.
sin 150
= sin (180 - 150
= sin 30
= 1/2.
