CBSE Class 10 Maths Introduction to Trigonometry
- if altitude of sun is 60 degrees then height of vertical tower that will cast shadow of lenght 20m
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Please sir solve this
- prove that cosec-cot A) ^2 = 1-Cos A/ 1+ cos A
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sinA-cosA-1/sinA+cosA-1=1/secA-tanA
- A ladder 15 m long just reach the top of a vertical wall. If the ladder makes an angle 60° with the wall , find the height of wall
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I can't understand
- if cosec∅+cot∅=k then show that cos∅k²-1/k²+1
- Prove that cosA = cotA/√1+cot^2A
- write all the other trigonometric ratios of angle a in terms of cosecant a
- evaluate sin 45°+ cos 45°?
