find the value of sinsquare 10+
sinsquare 80?
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Answer:
sin80∘−sin10∘sin80∘+sin10∘=tan35
Step-by-step explanation:
sin80∘−sin10∘sin80∘+sin10∘=tan35∘. Explanation: sina±sinb=2sin(a±b2)cos(a∓b2) tanA=sinAcosA.
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Gudnyt
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sin²10 = sin²10
sin80 = cos(90-80) = cos10
sin²80 = cos²10
Therefore,
sin²10 + sin²80
= sin²10 + cos²10
= 1
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