Question

Ans que no 4


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Answer 1

Here is your answer

In triangle A+B+C=180

A+B=180-C

we know Sin (90-A)=CosA

so

= SinA

Sin(A+B)

= sinA

Cos(180-90-C)

= SinA

cos(90-C)

But ,cos 90-A=sinA

= SinA

SinC

cut sin

=A

c

Lhs =rhs

hence proved

thanks

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Answer 2

Answer:

I hope it helps you a lot.......

Mark it as brainliest