secA+tanA=l show that secA=l2+1/2l

please solve this

 sir my question is that i have not a digital signature but itr 1 submitted tak a digital signature and itr 1 is nill for loaning after 30 days dhara 143(1) notice received this situation can i do

Prove that sinx+sin2x-sin3x =-4sinxcos0.5xsin1.5x

trigo

Integration of 3x2-2x+5dx/2x+1

Find the domain and range of f x is equal to 1 by under root of X + modulus of x

Why there is no videos for some chapters 

the derivate of 100 x99 at x=1

Sampal paper science in Hindi

(5+root3)(5-root3)

Visualize 3.42 on the no line upto 4 decimal place

Hi danveet singh sir, idont know hindi so in your app there is explanation in english or not .i hope that you will explai. thanyou .have a nice day!

Where was Euclid Born

where we have to show our reverse charges tax credit in gst return form gstr-2?and in 3b form?