Answer:
The value of x is 90°
Step-by-step explanation:
Given as :
The Trigonometrical equation as :
sin² x - 2 sin x + 1 = 0
Now, Let Sin x= a
So, The equation can be written as :
a² - 2 a + 1 = 0
<u>applying mid-term break</u>
a² - a - a + 1 = 0
Or, a ( a - 1) - 1 (a - 1) = 0
Or, (a -1) (a-1) = 0
∴ a - 1 = 0
i.e a = 1
Now, put the value of a
∵ Sin x = a
So, Sin x = 1
∴ x =
Or, x = 90°
So, The value of x = 90°
Hence, The value of x is 90° Answer
It might be c or d if not then sorry
Answer:
1.5241579e+16 is the answer
Answer: Marked price Rs. 600
Step-by-step explanation:
Let M be the marked price
1) When shop keeper sold at 20% discount, ie. SP = 0.8M
CP - SP = 20
CP = 20 + SP
CP = 20 + 0.8M
2) When shopkeeper sells at 8% discount, he makes a profit of 10%
SP = 0.9M/1.08
Equating 1 and 2, we get
20 + 0.8M = 0.9M/1.08
21.6 + 0.864M = 0.9M
0.036 M = 21.6
M = 21.6 / 0 036
M = 600