<u>Q1: Given sin(x+22)° = cos(2x−7)°
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Using the concept of Right triangles and Trigonometric ratios, we can use a formula given as follows :-
If, sin(A) = cos(B). Then we must have A + B = 90 degrees.
We have sin(x+22)° = cos(2x−7)°
Then it must be true that (x+22)° + (2x−7)° = 90 degrees.
(x + 22) + (2x - 7) = 90
3x + 15 = 90
3x + 15 - 15 = 90 - 15
3x = 75
Hence, x = 25 degrees is the final answer.
<u>Q2: Given cos(x) = 1213 and sin(x) = 513. </u>
It says to find ratio of tan(x).
Using the concepts of Trigonometric ratios, We can the formula that relates all three functions i.e. sin(x), cos(x), and tan(x).
tan(x) =
We can plug the given values in the formula.
is the final answer.
Answer:
tens!
Step-by-step explanation:
Lets first multiply 781.253 by 1000
= 781253
THe place value of 5 is in the tens place
Answer:
The right values of y :
5 , 3 , 5
Step-by-step explanation:
Let f be the function of equation : y = 1/2x² + 3
then f(0) = 1/2(0)² + 3 = 0 + 3 = 3
f(2) = 1/2(2)² + 3 = 2 + 3 = 5
f(-2) = 1/2(-2)² + 3 = 5
The reciprocal of a fraction is just that fraction flipped.
So the reciprocal of 1/12 would be 12/1.
Answer:
$78, $79.20
Step-by-step explanation:
PART A: $60 times 1.3 = $78
you add 30% to 100% to get 130% since it is a mark up, and then you convert to a decimal by going to the left twice then multiplying by original price.
PART B
Since it is a discount you subtract 15 percent from 100, but then add back 5 percent since there is tax applied to get 90%, convert to decimal and multiply by original price to get $88 x .9 = $79.20