the value of [sinsquare 20 +sin square 70+tan square 45
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Hi friend!!
sin²20+sin²70+tan²45
=sin²20+sin²(90-20)+(1)²
→tan45=1 ; sin(90-A)=cosA
=sin²20+cos²20+1
we know that sin²A+cos²A=1
→1+1=2
I hope this will help you ;)
sin²20+sin²70+tan²45
=sin²20+sin²(90-20)+(1)²
→tan45=1 ; sin(90-A)=cosA
=sin²20+cos²20+1
we know that sin²A+cos²A=1
→1+1=2
I hope this will help you ;)
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