Step-by-step explanation:
½ [cos(a − b) − cos(a + b)]
Using sum and difference formulas:
½ [cos a cos b + sin a sin b − (cos a cos b − sin a sin b)]
Distribute the negative:
½ (cos a cos b + sin a sin b − cos a cos b + sin a sin b)
Combine like terms:
½ (2 sin a sin b)
Simplify:
sin a sin b
Answer: y= 4/3x -8
Step-by-step explanation:
-4 - -8 over 6 - 3
-4 + 8 over 3
4 over 3
Y intercept is y1 which is -8
Answer: x = -11
Step-by-step explanation:
Expand the expression (distributive property): 3 - 9x = -8x + 14
// subtract 14 from both sides = -11
// add 9x on both sides = x
Simplify: x = -11
Answer:
Step-by-step explanation:
Answer:
Step-by-step explanation:
3*2 * 4 * 9 =36 * 6 = 216
216 ( 4 < 7)
864 < 1512
