Question

in traingle ABC= 1 and cos B= 1/2 then find angle A and angle B0⁰ less than 90⁰(at b less than or equal to 90⁰)
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Answer 1

Step-by-step explanation:

Given in △ ABC, ∠B=90

o

.

This given A+C=180

o

−90

o

=90

o

......(1).

Now,

sinA.cosC+cosA.sinC

=sin(A+C)

=sin(90

o

)

=1.