It is a trigonometry related sum and you have to find the value of th

Enroll For Free Now & Improve Your Performance.

×

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.

Click to Chat

1800-1023-196

+91-120-4616500

CART 0

MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM

DETAILS

MRP

DISCOUNT

FINAL PRICE

Total Price: Rs.

⇐ Back Proceed to Checkout ⇒

There are no items in this cart.
Continue Shopping

Menu

Aryan Kumar Grade: 11


                        It is a trigonometry related sum and you have to find the value of the given expression

2 years ago

Answers : (2)

Arun

24742 Points

							sqrt (3)*csc20° - sec20° 
= sqrt (3)*(1/sin20°) - 1/cos20° 
= (sqrt (3)*cos20° - sin20°)/(sin20°*cos20°) 
= 4*[(sqrt (3)/2)*cos20° - (1/2) sin20°]/(2sin20°cos20°) 
= 4*(cos30°cos20° - sin30°sin20°)/sin (2*20°) 
= 4*cos (30°+20°)/sin40° 
= 4*cos50°/sin (90°-50°) 
= 4*cos50°/cos50° 
= 4.

2 years ago

Soumendu Majumdar

159 Points

							Dear Student,
Though I know that your question is wrong as per your class since you have posted it I’ll find the value of the expression and you should also know the question should be 
Now to find the value of the expression you have posted we need to know the values of  & 
(You can use an approximated value)
(You can use an approximated value)
so,
so the value of  (Take approximate value)
Now to find the value of the correct expression,
First, multiply with ½ to both numerator & denominator
so we get
= 
=
=
=
=
Hope it helps!