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त्रिकोणमितीय सारणी का प्रयोग किये बिना म...

त्रिकोणमितीय सारणी का प्रयोग किये बिना मान ज्ञात कीजिए :
`(cot(90^(@) -theta)* sin(90^(@) - theta))/(sin theta) + (cot 40^(@))/( tan 50^(@)) - (cos^(2) 20^(@) + cos^(2) 70^(@))`

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Show that : (cot(90^(@)-theta)*sin(90^(@)-theta))/(sintheta)+(cot50^(@))/(tan40^(@))=2

Show that : (cot(90^(@)-theta)*sin(90^(@)-theta))/(sintheta)+(cot50^(@))/(tan40^(@))=2

((cos (90 ^ (@)) - theta) sin (90 ^ (@) - theta)) / (tan (90 ^ (@) - theta))

Without using trigonometric tables , evaluate the following : (cot(90^(@)-theta)*sin(90^(@)-theta))/(sintheta)+(cot40^(@))/(tan50^(@))-(cos^(2)20+cos^(2)70^(@))

Without using trigonometric tables , evaluate the following : (cot(90^(@)-theta)*sin(90^(@)-theta))/(sintheta)+(cot40^(@))/(tan50^(@))-(cos^(2)20+cos^(2)70^(@))

sin theta cos(90^(@)-theta)+cos theta sin(90^(@)-theta)

(cot(90^(@)-theta)sin(180^(@)-theta)sec(360^(@)-theta))/(tan(180^(@)+theta)sec(-theta)cos(90^(@)+theta))

(cos(90^(@)-theta).sec(90^(@)-theta).tantheta)/(cosec(90^(@)-theta).sin(90^(@)-theta).cot(90^(@)-theta))=?

sin theta cos(90^@ -theta) +cos theta sin(90^@ -theta) = ?

(cos theta)/(sin(90^(@)+theta))+(sin(-theta))/(sin(180^(@)+theta))-(tan(90^(@)+theta))/(cot theta)