Math, asked by kiransahoo151, 11 months ago

proof it sinsqare 70 +cos sqare 110 =1

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Answered by ᎷíssGℓαмσƦσυs

5

Answer:

sin²70+cos²110

sin²70+cos²(180-70)

sin²70+cos²70

we know that

sin²A+cos²A=1

so ,

sin²70+cos²70=1

prove that.....

Answered by charanreddy9081

1

Answer:sin²70+cos²110=

Sin²(90-20)+cos(90+20)

=cos²20+sin²20

=1

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