Step-by-step explanation:
To prove :
( 1 - sin x ) ( 1 + sin x ) = sec² x
LHS : -
( 1 - sin x ) ( 1 + sin x )
Formula / Identity : -
( a - b ) ( a + b ) = a² - b²
Here,
a = 1
b = sin x
( 1 - sin x ) ( 1 + sin x )
= 1 - sin² x
Identify : -
sin² θ + cos² θ = 1
cos² θ = 1 - sin² θ
Similarly,
1 - sin² x
= cos² x
= RHS
Hence verified.
Answer:
A
Step-by-step explanation:
Answer:
even
Step-by-step explanation:
The correct answer among all is D. I'm in K12 8th grade by the way so nice to meet you :)
Answer:
Step-by-step explanation:
You would do 10*0.06 to get 0.6
So her sold 60 cents worth of balloons
