12×12×12×12×12 is equivalent to 12^5 (a^b means a is to be written down B times all being multiplied.)
Answer: Option C is correct
Step-by-step explanation:
We know tha tCos(A-B) = cosA cosB + sinAsinB
Plugging A = 180 and B = Ф
cos(180-Ф)= cos180cosФ+sin180sinФ
= (-1) cosФ+ (0) sinФ [ since cos180=-1 and sin180 =0]
= -cosФ + 0
= -cosФ
Therefore option C is the correct answer.
Answer:
The sum of the exterior angles is 360 degrees.
Answer:
Answer: The answer is option B.
Step-by-step explanation:
Here,
We have,
So, it's true; and it lies in quadrant 1 and 4.
The reason according to the "CAST" rule cos theta is in 1st and 3rd quadrant cos theta is positive.
