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Step by step text solution for Using geometry prove that sin (90 - theta) = cos theta. by MATHS experts to help you in doubts & scoring excellent marks in Class 10 exams.
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KALYANI PUBLICATION-Complementary Angles and there Trigonamytry Ratios-EXERCISE
- Using geometry prove that sin (90 - theta) = cos theta.
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- Using geometry prove that tan (90- theta) = cot theta.
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- Using geometry prove that sec (90 - theta) = cosec theta.
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- Evaluate (cos 54°)/ (sin 36°).
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- Evaluate (sin 11°)/(cos 79°).
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- Evaluate (sin (90 - theta). cos (90 - theta))/(sin theta cos theta)
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- Evaluate tan1° tan 45° tan 89°.
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- Evaluate sec 50" sin 40° + cos 40" cosec 50°.
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- Evaluate sin theta sec (90 - theta) + cos theta cosec (90 - theta).
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- Evaluate cos thetasin theta + cos thetacos (90 - theta) + {(sin thet...
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- If sin 3 theta = cos (theta- 26°) where 3 theta and (theta -26°) are a...
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- If cot 5 theta = tan 10 theta, then find the value of theta.
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- If cos (20° + theta) = sin 30°, then find the value of theta.
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- If cos 9 theta = sin theta and 9 theta < 90° then find the value of ta...
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- If tan 2 theta = cot (theta - 18°), then the value of theta.
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- Prove that: tan 5° tan 85° tan 30° tan 65° tan 25° = 1/sqrt 3.
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- Prove that: tan 4° tan 43° tan 47° tan 86° = 1.
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- Prove that: tan 35° tan 40° tan 45° tan 50° tan 55° = 1.
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- Prove that: cosec (65° + theta) - sec (25° - theta) - tan (55° - the...
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- Prove that: (2 sin 68°)/(cos 22°)-( 2 cot 15°)/( 5 tan 75°)- 3( tan ...
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