kristencrum21 kristencrum21
  • 25-03-2020
  • Mathematics
contestada

Verify that (sinx-cosx)2 = 1 - 2 sin xcosx is an identity.

Respuesta :

bhuvna789456
bhuvna789456 bhuvna789456
  • 30-03-2020

[tex](sin x - cos x)^{2} = 1 - 2 sin x cos x[/tex]

Step-by-step explanation:

Step 1 : Taking L.H.S(Left Hand Side) we have,

[tex](sin x - cos x)^{2} = sin^{2} x + cos^{2} x - 2 sin x cos x[/tex]                       ... equation (1)    

Step 2 : As we know, [tex]sin^{2} x + cos^{2} x = 1[/tex]

Therefore,

by substituting value in equation (1), we have

[tex]1 - 2 sin x cos x[/tex]

Step 3 : As, L.H.S = R.H.S

Hence Proved,

[tex](sin x - cos x)^{2} = 1 - 2 sin x cos x[/tex]

Answer Link

Otras preguntas

What is a scientific fault?
You drink g 8-ounce glasses of water plus a 20- ounce bottle of water. You drank 76 ounces of water today. Write and solve an equation to determine the number o
how are reptile lungs different than human lungs
Vegeterians are healthier than people who eat meat fact or opinion explain
80% of a number is 96. What is 25% of that same number? A. 20 B. 30 C. 40 D. 120
The practice of "senatorial courtesy" is used to ensure that A. debate in the Senate is conducted in a professional manner. B. there is a positive relationship
what is 2/3+3k/4=71/12 how do u solve this
what is the absolute value of 4|4x-3|-8=-4
What the adverb in this sentence? See how he skillfully maneuvers the charging bull by moving the red cape.
a third of the class has pets 4 of the class have hamsters there are 27 pupils in the class five people in the class have green eyes how many pupils have pets?