eramo5720 eramo5720
  • 22-02-2018
  • Mathematics
contestada

Find the exact value of sin ( 2
a. if cos a = 3 /5 . assume a is a quadrant i angle in standard position.

Respuesta :

fawazazeez512p4jykl fawazazeez512p4jykl
  • 22-02-2018
In a right angled triangle 'efg' cos a = 3/5
From Pythagoras theorem the third side will be 4
cos a =3/5
sin a =4/5
sin 2a =2 x 4/5
sin 2a= 8/5
Answer Link

Otras preguntas

he equals sign “=” is used as a) Is the “assignment” operator and computes the right side, takes that value and stores it in the variable on the left side b) A
Paul bought a student discount card for the bus. The card allows him to buy daily bus passes for $1.30. After one month, Paul bought 19 passes and spent a total
The heat of vaporization of a substance is the heat that 1kg of that substance needs to :
A rear wheel drive car of mass 1000 kg is accelerating with a constant acceleration without slipping from 0 to 60 m/s in 1 min. What will be friction force acti
One of the tallest living man has a hight of 246 cm. One of the tallest living women is 234 cm tall. Heights of men have a mean of 171 cm and a standard deviati
Can somebody help me out i’m struggling really badly
Departmental overhead rates are generally preferred to plant-wide overhead rates when: - the activities of the various departments in the plant are not homogen
Because of its retrograde spin, Venus has a longer solar day than its year :
4. The figure above is a model of atoms in a sample at room temperature. Which physical property does this sample have?A.it can be poured B. It can expand to f
Find the measure of the marked angles.