If cos2theta=sin4theta , where 2theta an...

If `cos2theta=sin4theta` , where `2theta` and `4theta` are acute angles, find the value of `theta` .

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RD SHARMA ENGLISH-TRIGONOMETRIC RATIOS-All Questions

If 2theta+45o and 30o-theta are acute angles, find the degree measu...
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If theta is a positive acute angle such that sectheta=cos e c\ 60o ...
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If cos2theta=sin4theta , where 2theta and 4theta are acute angles, ...
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If sin3theta=cos(theta-6^0), where (3theta)a n d(theta-6^0) are both...
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Write the maximum and minimum values of sintheta .
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Write the maximum and minimum values of costheta .
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What is the maximum value of 1/(sectheta) ?
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What is the maximum value of 1/(cos ec \ theta)?
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If tantheta=4/5, find the value of (costheta-sintheta)/(costheta+sinth...
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If costheta=2/3, find the value of (sectheta-1)/(sectheta+1) .
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Given tantheta=1/(sqrt(5)), what is the value of (cos e c^2theta-sec^2...
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If cottheta=1/(sqrt(3)) , show that (1-cos^2theta)/(2-sin^2theta)=3...
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If tanA=3/4 and A+B=90^@, then what is the value of cotB ?
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If A+B=90^@ and cosB=3/5 , what is the value of sinA ?
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Write the acute angle theta satisfying sqrt(3)sintheta=costheta .
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Write the value of tan10^@tan15^@tan75^@tan80^@ .
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If tanA=5/(12), find the value of (sinA+cosA)secA .
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