Click to Chat

0120-4616500

CART 0

• 0

MY CART (5)

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

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: R

There are no items in this cart.
Continue Shopping
Get instant 20% OFF on Online Material.
coupon code: MOB20 | View Course list

Get extra R 150 off
USE CODE: SSPD25

				   What is the value of cot 15o + cot 75o + cot 135o - cosec 30o?



7 years ago

Share

										Ans:1$A = cot15 + cot 75 + cot135 - cosec30$$cot75 = cot(90-15) = tan15$$A = cot15 + tan15 + cot135 - cosec 30$$tan15 = tan(45-30) = \frac{tan45 - tan30}{1+ tan45.tan30} = \frac{1-(3)^{-1/2}}{1+(3)^{1/2}}$$tan15 = \frac{3^{1/2}-1}{3^{1/2}+1}$$A = (\frac{3^{1/2}+1}{3^{1/2}-1}) + (\frac{3^{1/2}-1}{3^{1/2}+1}) + (-1) - (2)$$A = 1$Thanks & RegardsJitender SinghIIT DelhiaskIITians Faculty

2 years ago

# Other Related Questions on Trigonometry

What is trigonometric function period? Explain it with an example.

Already explained. Check your previous question. Here Period is associated with Time Period. ANd all trignometrc functions have generally period of 2pi.

 Vikas TU 2 months ago
Plz do help me...if |sin x|

@ partha your question donot have any attachment with it , kindly repost the full question that what u want to calculate from |sin x | .. and also attach a proper picture with appropriate...

 Umakant biswal 2 months ago

Dear friend |sinx| = sinx since the value of the x is anything but the sinx have mod. So, the |sinx| = sinx. thank you

 PASUPULETI GURU MAHESH 2 months ago
if 1+sin a =9 cos a then 5(1-cos a) if 1+sin a =9 cos a & 0

Dear Student, Please write your question clearly. Its not clearly formatted. Thanks, Vijay

 Vijay Mukati 3 months ago

Dear Yathisth, as this question is uncleared i have answered this question. check again, 1+sin a=9 cos a Divide by cosa both sides, we get seca + tana = 9 seca = 9 – tana squaring both...

 Vikas TU 3 months ago
what is a vcector cross product?????????????????????????????????????????????

HAI GURAVAIAH, VECTORE PRODUCT IS BINORY OPERATION ON TWO VECTORES IN THREE DIMENTIONAL SPACE AND IT IS DENOTED BY THE SYMBOLL X

 Gowri sankar 9 months ago

HEllo Guravaiah In mathematics , the cross product or vector product is a binary operation on two vectors in three-dimensional space and is denoted by the symbol ×. The cross product a × b...

Dear Guravaiah (Try it: using your right hand, you can see x cross y should point out of the screen). Find the direction perpendicular to two given vectors . Find the signed area spanned by ...

 Prabhakar ch 9 months ago
The sol. set of inequility (3 x -4 x ).ln(x+2) /x 2 -3x-4 is?

Inequality is missing in this question. Only expression is provided. PLease provide the complete question.

 Harsh Patodia one month ago
Find the Laplace transform of : t(1+sint) ½ ​....................

Given that t*(sin t )^(1/2) = 2^(1/2)*t* cos(pi/4-t/2) which laplace transformation is which is solved by the matlab software.

 Kumar one month ago
View all Questions »

• Complete JEE Main/Advanced Course and Test Series
• OFFERED PRICE: R 15,000
• View Details
Get extra R 3,750 off
USE CODE: SSPD25

Get extra R 150 off
USE CODE: SSPD25

More Questions On Trigonometry