In Exercises 23-30, solve algebraically for exact solutions in the interval [0,2pi). Use your grapher only to support your algebraic
work.
24. cos 2x + sin x = 0
23. cos 2x + cos. x = 0
25. cos .x + cos 3.x = 0
26. sin x + sin 3x = 0
In Exercises 31-36, use half-angle identities to find an exact value
without a calculator.
31. sin 15°
32. tan 1950
33. cos 75°
34. sin (5/12)
36. cos (w/8)
35. tan (7/12)

(2x + 16) + (x) = 180

step-by-step explanation:

given,

abcd is a quadrilateral inscribed in a circle

angle a is labeled x plus 16, (x + 16)

angle b is labeled x degrees, (x)

angle c is labeled 6x minus 4, (6x – 4)

angle d is labeled 2x plus 16, (2x + 16)

what equation can be used to solve for angle b?

we know that the sum of the opposite angles of a simple quadrilateral inscribed in a circle is 180 degrees.

angle b is opposite angle d

therefore, angle b + angle d = 180

(x) + (2x + 16) = 180 

same as (2x + 16) + (x) = 180

you'll just earn points here

step-by-step explanation:

answer: i wpould go with c

step-by-step explanation: