It is known
and
(if you want to determine cosine of 30° you should draw the perpendicular line to the x-axis and find the point of intersection, the value of x-coordinate is the cosine of 30°).
The angle
and
(see image).
The angle
and
(see image).
Answer:
What grade is this 12th?
Step-by-step explanation:
Answer:
Step-by-step explanation:
sin x=a+b
cos x=a-b
sin²x+cos²x=(a+b)²+(a-b)²=2a²+2b²
or 2a²+2b²=1
a²+b²=1/2 which is constant for all values of x
(ii)
Answer:
No.
Step-by-step explanation:
No, because you can multiply or divide the length and breadth of rectangle A by the same number to get B
Answer:
64
Step-by-step explanation:
12+4=16
12+4=16
12+4=16
12+4=16
16 x 4 = 64
