osborne83 osborne83
  • 15-01-2020
  • Mathematics
contestada

sin x = -1/2, and the cos y = √3/2. if angle x is in the fourth quadrant and angle y is in the first quadrant, the value of cos(x-y) is

Respuesta :

shaleenparikh1
shaleenparikh1 shaleenparikh1
  • 15-01-2020
x is 11pi/6 and y is pi/6. So cos(10pi/6) = cos(5pi/3)=1/2. 1/2 is the answer
Answer Link

Otras preguntas

What was the purpose of the Washington Naval Disarmament Conference and the Kellogg-Briand Pact? What prompted them? Was the purpose accomplished?
what is 60% off 30.00
How does McDonalds use vertical integration to reduce competition and make the business more profitable?
Choose the appositive or appositive phrase in the sentence. Some people, art critics in particular, say that Nelson, who also sculpts, made a bad choice this ti
solve the equation 4w=130.4
Algebra:please answer #1 and show work
neurotransmitters carry nerve impulses across where
Why are rules crucial for a well functioning civilization? Please explain the best you can in detail.
Why are 3 nucleotides used as codons for amino-acid mapping in DNA?
Lesson: Adding and subtracting Like Fractions: Solve 1/9 + (-5/9)=? 3/8 + (-7/8)=? -3/4 + (-3/4)=? Lesson: Adding and subtracting Unlike Fractions: Solve (-7