Question
How am I suppose to transform the left side of the equation into the right side using trig identities? ):
1) sin^2θ - cos^2θ = 2 sin^2θ - 1
1) sin^2θ - cos^2θ = 2 sin^2θ - 1
Answers
sin^2x + cos^2x = 1
from the above,we make cos^2x the subject of the formula:
cos^2x = 1- sin^2x......................(1)
substituting the above into the left hand side of original equation:
sin^2x - ( 1 - sin^2x )
expanding the bracket and noting that - times - equals +
sin^2x - 1 + sin^2x
rearranging:
2sin^2x - 1.
from the above,we make cos^2x the subject of the formula:
cos^2x = 1- sin^2x......................(1)
substituting the above into the left hand side of original equation:
sin^2x - ( 1 - sin^2x )
expanding the bracket and noting that - times - equals +
sin^2x - 1 + sin^2x
rearranging:
2sin^2x - 1.
Related Questions
I do not understand these problems. :S
I'd really appreciate the help.
Use trigonometric identit...
Suppose you are asked to determine the perimeter of a seven-sided irregular figure. You make the fol...
The scale balanced when n+20=80
Suppose the left side becomes n+3
How can I change the right s...
How could Jason solve for T in this equation?
T - 8 = 40
A) add 8 to the left side
B) add 8 t...