Please help me with this

asked Feb 13, 2024 52.1k views

4 votes

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2 votes

Answer:

(a) 21 (b) 53.1

Explanation:

(a)

$sin(30)=(x)/(42) \\x=sin(30)*42\\x=21$

(b)

$cos(x)=(21)/(35) \\x=cos^(-1) ((21)/(35) )\\x= 53.130....\\x=53.1$

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