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CALCUTTA BOOK HOUSE-TRIGONOMETRIC RATIOS AND TRIGONOMETRIC IDENTITIES -EXERCISE
- If tan^(2) 45^(@)-cos^(2) 60^(@)=x sin 45^(@) cos45^(@) tan 60^(@), t...
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- If sec(alpha-beta)=sqrt(2) and sin(alpha+beta)=(1)/(2), then find the...
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- If sin27^(@)=0.454, then find the value of cos 243^(@) .
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- If tanA+sinA=p and tanA-sinA=q, then which one of the following is cor...
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- If cos theta ge (1)/(2) in the first quardrant, which one of the follo...
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- If A=sin^(4) theta+cos^(4) theta, then which one of the followings is...
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- If (1+tanA)(1+tanB)=2, then tan(A+B)=
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- Write 'true' or 'false' : sec theta=(2xy)/(x^(2)+y^(2))
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- Write 'true' or 'false' : sin theta=(x^(2)+y^(2))/(2xy)
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- Fill in the blanks : If sin^(4)A+sin^(2)A=1, then cot^(4)A+cot^(2)...
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- Fill in the blanks : "tan"(pi)/(16) "tan"(3pi)/(16)"tan"(5pi)/(16)"t...
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- Fill in the blanks : tan theta=sqrt(3), cos theta= -(1)/(2) and 0^(...
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- If theta lies in the fourth quadrant and sec theta=(5)/(3), then the ...
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- If cos (A-B)=(1)/(2) and cot(A+B)=sqrt(3), then find the least positiv...
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- If n be an integer, then find the value of tan{(npi)/(2)+(-1)^(n).(pi...
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- Find the least value of (2 sin^(2)theta+3 cos^(2)theta).
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- If cos theta+sectheta=sqrt(3), then prove that cos^(3)theta+sec^(3)the...
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- If 3 sin theta+4 cos theta=5, then prove that sin theta=(3)/(5).
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- If sin theta+"cosec"theta=2, then prove that sin^(7) theta+"cosec"^(7)...
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- If cos theta-sin theta=sqrt(2)cos theta, then prove that cos theta+sin...
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