music700
music700
14-11-2017
Mathematics
contestada
Trigonometry help. I cant do this
Respuesta :
dragonslasher
dragonslasher
14-11-2017
the answer is 0.921.
Apply the trig identity: cos (a + b) = cos a.cos b - sin a.sin b
cos
(75)
=
cos
(30+45)
=
cos30
⋅
cos45
−
sin30
⋅
sin45
=
0.921
Answer Link
musiclover10045
musiclover10045
14-11-2017
cos75 = 0.258819045 = sin15
Answer Link
VER TODAS LAS RESPUESTAS ( 39+ )
Otras preguntas
How was the earth created in the world on the turtle's back?
How much money you have to deposit in an acconut today at 3% simple interest rate if you are to receive Br.5,000 as amount in 10 years?
What are the advantages and disadvantages of working for a lawyer in a solo practice?
Which of the following statements are true? I. The sampling distribution of ¯ x has standard deviation σ √ n even if the population is not normally distribu
Which story scenario would best fit the historical context of the 14th century? A. A village struggles to survive being cut off from the neighboring towns due t
2 a² +6² a-b if a = -3 and b = -5
Craig is practicing his baseball pitching he kept track of the speed oI made a histogram at right can you tell the speed of each of his throws yesterday, and ma
Why does Jason Stanley feel optimistic about this snail invasion? (A) Dogs like Mellon have tracked down most of the snails. Doctors can easily treat patients w
110. Which of the following is a method used for preventing nosocomial infections? a. Using antimicrobial sanitizers b. Using nondisposable items c. Avoiding ex
An investor is in their mid-30s and wants to start saving a portion of their income for retirement. this investor has a low to moderate tolerance for risk. whic
