in right angle triangle abc sin a= cos a then the triangle is what type of triangle
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Answer:
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Step-by-step explanation:
cosA+cosC=sinB
2cos(
2
A+C
)cos(
2
A−C
)=sinB
2cos(
2
π−B
)cos(
2
A−C
)=sinB
cos(
2
A−C
)=cos
2
B
2
A−C
=
2
B
A=B+C
A+B+C=π
A=
2
π
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