If sinxcos(pi/7)-sin(pi/7)cosx=-sqrt2/2 then x can equal?
2 answers:
I'm going for a range of 0 < x <2<span>π
This is R sin (x-a), although R is 1.
a = </span><span>π/7, so
=> sin (x-(</span><span>π/7)) = -1/(sqrt(2))
=> x = 53</span>π/28, 39<span>π/28</span>
Answer:
its's 5pi/4 +pi/7 and 3pi/4+pi/7
Step-by-step explanation:
Just took the quiz on A P E X
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