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  • 1 answers

Khushank Singh 4 years, 4 months ago

Sin theta/cosec theta+ cos theta/ sec theta main Cosec ko1/sin aur sec ko 1/cos main convert karenge Phir sin/1/sin ho jayega +cos/1/cos ho jaega Phir sin×sin+cos×cos then Sin^2theta+cos^2theta=1 H.P
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Khushank Singh 4 years, 4 months ago

Great

Saloni ? 4 years, 4 months ago

See ncert book ?....
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Tec Om 4 years, 4 months ago

Just use the quadratic formula -b+-√b2-4ac/2a
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Irshad Ali 4 years, 4 months ago

=10+0+0+17 =10+17 =27

Sudipta Munda 4 years, 4 months ago

0

Yogita Ingle 4 years, 5 months ago

5×2+0×5+8×0+9+8

= 10+0×5+8×0+9+8

= 10 +8×0+9 + 8

= 10 + 9 + 8

= 19 + 8

= 27

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Gaurav Seth 4 years, 5 months ago

7, 77, 777, 7777 ….to n terms.         
Sn=7+77+777+7777+……+to n terms      
introducing 9       
  = (7/9) [9+99+999+……+ to n terms]              
= (7/9) [(10-1) + (100-1) + (1000-1) +……...+ to n term]               
= (7/9) [10+100+1000+……... n terms – (1+1+1+1+…… n terms)             
  = (7/9) [10+100+1000+………n terms –n]     
 Here      a=10, r=10             
 = (7/9) [10(10n-1)/ (9) - n]

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Gaurav Seth 4 years, 5 months ago

QUESTION

Write the relation R = {(xx3): is a prime number less than 10} in roster form.

SOLUTION

R = {(xx3): is a prime number less than 10}

The prime numbers less than 10 are 2, 3, 5, and 7.

∴R = {(2, 8), (3, 27), (5, 125), (7, 343)}

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Jaya Jeevan 4 years, 5 months ago

Sin 100° + cos 100° = sin 100° + cos ( 90°+10°) =sin 100°+(-sin10°) (By the formula cos (π/2+x)= -sin x) =2 cos((100+10)/2)* Sin((100-10) /2) =2cos 55°*sin45° =2cos 55°* 1/√2 =√2*√2 cos 55°*1/√2 =√2cos 55° Or = (1.4)*(0.57) =0.8

Gaurav Seth 4 years, 5 months ago

sin 100° + cos 100°

= sin100° + cos(90°+10°)
[cos 10° becomes sin 10°]

= sin100° + sin 10°

by the formula,

sin C + sin D = 2cos sin

= 2cos sin

= 2cos  sin 

= 2cos55° + sin45°

= 2cos55° + 1/√2

=√2.√2 cos55° .1/√2

= √2cos55°

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Gaurav Seth 4 years, 5 months ago

A n s w e r : Maximum value is 1/2 and minimum value is -1/2.

EXPLANATION:

sin cos x = 1/2(2 sin x cos x)

= sin 2x/2

Hence, the Maximum value is 1/2 and minimum value is -1/2.

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Why
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Irshad Ali 4 years, 4 months ago

What's your question

Abhishek Jha 4 years, 5 months ago

क्यों
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Abhishek Jha 4 years, 5 months ago

Points make a line which is said as a straight line.
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Vishakha Maurya 4 years, 4 months ago

2!+3!=2*1+3*2*1=8 No

Smita Mohapatra 4 years, 5 months ago

2! + 3! =2×1+3×2×1 =2+6 =8 But in 5! =5×4×3×2×1 =120 8 is not equal to 120 Hence , 2!+3! is not equal to 5! HOPE IT WILL HELP ??????
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? S. S. ? 4 years, 5 months ago

hnn ? question pehle tumhara visible hua....but type krke pehle mene rkha tha...gya nii toh meri glti thodi hai??

? S. S. ? 4 years, 5 months ago

???ohho....prr btya kisne mene aaneko ...toh socho mene pehle se yha ques dlne ki tyri ni ki hogi?!?
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? S. S. ? 4 years, 5 months ago

seconds ka frk hai bss dono timing me??lol

? S. S. ? 4 years, 5 months ago

???
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Dεερακ Ȿιηɠꜧ 4 years, 5 months ago

Ans:- (-√3/2)
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Dεερακ Ȿιηɠꜧ 4 years, 5 months ago

-√3/2

Ankit Mishra 4 years, 5 months ago

S e x p o rn
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Krishnapriya Kumaran 4 years, 1 month ago

Oh okk thank u... But i want to know the answer...

Manisha Dhibar 4 years, 5 months ago

General solution are deleted topic from this chapter
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  • 4 answers

Tec Om 4 years, 5 months ago

A

Roopam Sharma 4 years, 5 months ago

Hii Aadya ji

Ankit Mishra 4 years, 5 months ago

26

Gaurav Seth 4 years, 5 months ago

The answer is 26 [most probably]

First find x

3[x]+2 = 2[x+4]  [given]

3x + 2 = 2x + 8

3x - 2x = 8 - 2

therefore x = 6

Now,  y=3[x]+2 or y = 2[x+4] 

Putting the value of x ,

we get y = 20

 

now x+y = 20 + 6

= 26

 

 

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