Question

Please help.

Topic : Trigonometry

No spams please,..

Answer 1

Hi dear !!

alpha = A

bita = B

sin( A + B ) = > sinA cosB + CosA SinB

given :- CosA = 12/13

so sinA = 5/13

SinB = 4/5

so CosB = 3/5

so , on putting values we get

5/13× 3/5 + 12/13× 4/5

=> 63/65

hope it helps you dear !!

thanks !!

Answer 2

Answer:

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HELLO!!

hey mate please refer to the attachment.