Math, asked by revathi55, 1 year ago

If A+B =90 degree , then cosA sinB +sin A cos B os equal to

Anonymous: mark my ans as brainlist

Answers

Answered by Anonymous

$good \: \: \: morning \: \: \: \\ \\ \\ \sin(b + a) = sin(b) \times \cos(a) + \cos(b) \times \sin(a) \\ \\ \\ \\ \sin(90) = 1$

Anonymous: Now, L.H.S of Equation becomes Sin(60 + 30 ) = Sin ( 90 ) = 1

revathi55: pls tell.. me ya

Anonymous: do you wana its proof

revathi55: hm.. ya

Anonymous: it's proof is totally based on diagram

Anonymous: and I can't draw a diagram here

revathi55: but i needed

Anonymous: U can search its proof on Google

revathi55: hm..kk.. tq

revathi55: but Google doesn't respoing .. ya... pls help me

Answered by brunoconti

Answer:

Step-by-step explanation:

cosAsinB + sinAcosB = sin(A + B)

= sin 90° = 1.

revathi55: is this a formula???

revathi55: pls. . respond

Anonymous: yes

Anonymous: it is formula

revathi55: tq

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