Answer:
A. sec =12/13×
B. COS =12/13×
C. tan =12/5✓
D. sin =12/13 ✓
Step-by-step explanation:
we know,
using Pythagoras formula,
p=12,h=13 ,b=?
h^2 =p^2 +b^2
b=5
so tan = p/b
=12/5
sin=p/h and cosec= h/p
D. sin =12/13
This is for 6^7 and ill comment the next one
Answer:
x + Y = 39 or x = 39-y
20x + 50y = 1.40
20 (39 - y) + 50y = 11.40
7.80 - 20y + 50y = 11.40
30y = 11.40 - 7.80
30y = 3.60
y = 3.60/30
y = 12 50p coins were collected.
x = 39 - 12 = 27 20p coins were collected.
Proof:
20*27 + 50*12 = 11.40
5.40 + 6 = 11.40
11.40 = 11.40
I hope it helps.
Answer:
The area of Trapezium is 21 cm²
Step-by-step explanation:
Divide the trapezium into a Triangle and Rectangle.
The length of the side is given in the figure behind.
So,
The area of Trapezium
= The area of Triangle + The area of Rectangle
= 1/2 × 4 × 3 + 5 × 3 cm
= 6 + 15 cm
= 21 cm²
Thus, The area of Trapezium is 21 cm²
<u>-TheUnknownScientist 72</u>