(ii) At 5 o'clock, what are the obtuse angle and th
and the hour hand of a clock?
3. Write the complement (complementary angle) of ea
qoo (i) 36
(ii) 56°
(iii) 7
(v) 45°24'
(vi) 55°10' 20" (vii) 6
4. Write the supplement (supplementary angle) of ea
(i) 15°
(ii) 160°
(iii) 2
(v) 30°45' 26" (vi) 103°14'46"
180
Answers
Answer:
Step-by-step explanation:(i) Complement angle of 45°
= 90° – 45° = 45°
(ii) Complement angle of x°
= 90° – x° = (90 – x)°
(iii) Complement angle of (x – 10)° = 90° (x – 10°)
= 90°- x + 10° = 100°- x
(iv) Complement angle of 20° + y°
= 90°- (20°+ y°)
= 90° – 20° - y° = 70° - y°
Answer:
Answer:
Length = 75cm.
Breadth = 25cm.
Given:
The perimeter of a rectangle is 200 cm.
Its length is three times its breadth.
To find:
Find it's length and breadth.
Solution:
Given that,
Its length is three times its breadth.
Let us assume length as l
And, Let us assume breadth as b
So,
It can be written as l = 3b
We know that,
Perimeter of a rectangle = 2(l + b)
Now,
l × b = 200
Given, Perimeter = 200.
We know that, l = 3b..
By replacing 3b in place of l, We get :
➨ 2(3b + b) = 200
➨ 6b + 2b = 200
➨ 8b = 200
➨ b = \bf \dfrac{200}{8}
8
200
➨ b = 25cm.
Hence,
Breadth = 25cm.
Length = 3b = 3 × 25 = 75cm.
Verification:
2(3b + b) = 200
➨ 2(3(25) + 25) = 200
➨ 2( 75 + 25 ) = 200
➨ 2( 100 ) = 200
➨ 200 = 200
LHS = RHS
Hence , Verified.
this is answer for your upper question.