Question

please let me know the answer ​

Answer 1

Step-by-step explanation:

sin²∅-3sin∅+2=0

sin²∅-2sin∅-sin∅+2=0

sin∅(sin∅-2)-1(sin∅-2)=0

(sin∅-1)(sin∅-2)=0

sin∅= 1 and sin∅=2

but we know that sin∅ lie between -1 to 1

sin∅=1

sin∅= sin90

∅=90

#666

Answer 2

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