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" tan 10" tan 15" tan "75^(@)" tan B0" क...

" tan 10" tan 15" tan "75^(@)" tan B0" का मान जात कीजिए "

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tan15^(@) + tan 75^(@)=

tan10^@tan15^@tan75^@tan80^@ is

Show that : (i) tan 10^(@) tan 15^(@) tan 75^(@) tan 80^(@) = 1 (ii) sin 42^(@) sec 48^(@) + cos 42^(@) "cosec 48"^(@) = 2

Show that tan 15^@ + tan 75^@ = 4

If sec theta + tan theta = m (>1) , then the value of sin theta is (0^@ यदि sec theta + tan theta = m (>1) हो, तो sin theta का मान ज्ञात कीजिए (0^@ < theta < 90^@)

Show that: tan 10^(@)tan 15^(@) tan 75^(@)tan 80^(@)=1

The value of tan11^@ tan17^@ tan 79^@ tan73^@ is- tan11^@ tan17^@ tan 79^@ tan73^@ का मान है-