agyawali78 agyawali78
  • 03-07-2022
  • Mathematics
contestada

If 1-cosA = 1/2 , Then find the value of sinA.

Respuesta :

thakurramkumar855
thakurramkumar855 thakurramkumar855
  • 03-07-2022

Step-by-step explanation:

Given :

1- cosA = 1/2

or, CosA = 1 -1/2

Therefore ; CosA = 1/2 = b/h

According to the Pythagoras theorem,

P = root under h^2 - b^2

= root under (2)^2 - (1)^2

= root under 4 -1

= root 3

Again,

SinA = P/h

= root 3 / 2

Answer Link

Otras preguntas

why dog pants during summer use the cocept of evaporation
explain why the motion of a body which is moving with constant speed in a circular path is said to be accelerated ?
How do we use the Pythagoras theorem in "everyday life".
example of onomatopoeia in the seven ages of man
I figured out the 1st question but I do not understand the second one...please show me step by step! Thank you!
How would you call in other words to scold or punish severely
The diameter of a cylinder is 6 feet 6 inches. The height of a cylinder is 12 feet 3 inches. What is the surface area?    (feet squared)What is the volume?
How do we use the Pythagoras theorem in "everyday life".
name a metal that doesn't conduct electricity
round to the nearest hundredth 5.6192