Math, asked by tejastanmay2007, 4 days ago

secA.sin C - tan A.tan C / sin B​

Answers

Answered by sohankumarparida05
0

Answer:

0

Step-by-step explanation:

A+90°+C=180°

=>A+C=90°

sinB

secAsinC−tanAtanC

=(secAsinC−

cosA

sinA

×

cosC

sinC

)÷sin90°

=(

cosA

sinC

cosA

sinA

×

cosC

sinC

)

=(

cosA

sin(90°−A)

cosA

sinA

×

cos(90°−A)

sin(90°−A)

)

=

cosA

cosA

cosA

sinA

×

sinA

cosA

=1−1

=0

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