Question

sina + COSB=1, A = 30' and is an acute angle, the
bind the value of B-!
[1 mark ]​

Answer 1

Answer:

《Hey mate》

Here is your answer...

Given,a=30

Sin a + cos b = 1

=》Sin 30 + Cos b = 1

=》1/2 + Cos b = 1

=》Cos b = 1 - 1/2

=》Cos b = 2 - 1/2

=》Cos b = 1/2

=》Cos 60 = 1/2 (answer).

hence b= 60

Step-by-step explanation:

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