Step-by-step explanation:
We know, tan45∘=1,cos30=23,sin45∘=21,cos45∘=21
Now, tan245o−cos230o=xsin450cos45o
⇒1−43=x×21×21=>1−43=x×21
⇒41=2x, ⇒x=42=2
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Answers & Comments
Step-by-step explanation:
We know, tan45∘=1,cos30=23,sin45∘=21,cos45∘=21
Now, tan245o−cos230o=xsin450cos45o
⇒1−43=x×21×21=>1−43=x×21
⇒41=2x, ⇒x=42=2
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