Browse by Stream
QnA
Home
QnA
get app
Go To Your Study Dashboard
  1. Home
  2. School
  3. 1.(sec A +Tan A)(1-Sin A)= 2.If Tan( A+B)=1 then Sin(A+B)= 3.Tan 0.Tan 1.Tan 2.........Tan 90= 4.perimeter of square and circumference of circle are equal then...........is more 5.sin 0 .sin 10. sin 30. sin 80. sin 90=
# School

1.(sec A +Tan A)(1-Sin A)= 2.If Tan( A+B)=1 then Sin(A+B)= 3.Tan 0.Tan 1.Tan 2.........Tan 90= 4.perimeter of square and circumference of circle are equal then...........is more 5.sin 0 .sin 10. sin 30. sin 80. sin 90=

Answers (1)
D Deependra Verma

1)fracsec a + an a 1-sin a = frac1+sin acos a *(1- sin a)=frac1+sin^2 a+ 2 sin a cos a *(1-sin^2 a)

=sec^3 a +sec a * an^2 a+2 sec^2 a * an a

2) If ; an(a+b)=1; then ; sin (a+b)

Rightarrow an(a+b)=1

Rightarrow (a+b)= fracprod4

Rightarrow sin (a+b)=sin ( fracprod4)=frac1sqrt2

3) an 0 an 1 an2 ...... an 90

wkt ; ; tan 90 =infty

so, ; ; an 0 an 1 an2 ...... an 90=infty

4.perimeter of square and circumference of circle are equal then...........is more

perimeter; ; of; ; square ; ; is; ; 4a ; ; where; ; a ; ; is; ; side; ; of ; ; square

circumference; ; of ; ; circle; ; is ; ;( 2prod*r) ; where ; ; r; is; ; radius ; ; of ; ; circle

4*a=2*prod *r

Rightarrow a=fracprod*r2

Area ; of; square = a^2=(fracprod*r2)^2=2.467*r^2

Area ; of; circle = prod*r^2=prod*r^2=3.14*r^2

So, Area of circle is greater than Area of square

 5)sin 0* sin 10*sin 30*sin 80*sin 90=

we; know; that; sin 0 = 0

so ; sin 0* sin 10*sin 30*sin 80*sin 90=0

Similar Questions

Latest Asked Questions

Most Viewed Questions

Preparation Products

Knockout NEET 2024

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 40000/-
Buy Now
Knockout NEET 2025

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 45000/-
Buy Now
NEET Foundation + Knockout NEET 2024

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 54999/- ₹ 42499/-
Buy Now
NEET Foundation + Knockout NEET 2024 (Easy Installment)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 3999/-
Buy Now
NEET Foundation + Knockout NEET 2025 (Easy Installment)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 3999/-
Buy Now
Boost your Preparation for JEE Main with our Foundation Course
Start Now
 
Exams
Articles
Questions