Answer:
Options C and D are correct answers.
C. 3
D. 3.In e
Step-by-step explanation:
- (Given)
Cos2x.cosx - sin2x.sinx = cos(2x+x)
cos(2x+x) = cos(3x) = (√3)/2
cos⁻¹ (√3/2) = 30°, so x =30/3 = 10°
Answer:
im not sure what the answer is but the kid that has answered before me is COMPLETLY wrong, i had this question and i took his word for it and BAM got it wrong
Step-by-step explanation:
Answer: 17x^2 + 11x + 16
Step-by-step explanation:
The first term is, 17x^2 its coefficient is 17 .
The middle term is, +11x its coefficient is 11 .
The last term, "the constant", is +16
Step-1 : Multiply the coefficient of the first term by the constant 17 • 16 = 272
Step-2 : Find two factors of 272 whose sum equals the coefficient of the middle term, which is 11 .
-272 + -1 = -273
-136 + -2 = -138
-68 + -4 = -72
-34 + -8 = -42
-17 + -16 = -33
-16 + -17 = -33