Class 10 ICSE Maths Trigonometrical Identities Boards Questions
Here we provide Class 10 Maths important notes,board questions and predicted questions with Answers for chapter Trigonometrical Identities. These important notes,board questions and predicted questions are based on ICSE board curriculum and correspond to the most recent Class 10 Maths syllabus. By practising these Class 10 materials, students will be able to quickly review all of the ideas covered in the chapter and prepare for the Class 10 Board examinations.
Class 10 ICSE Trigonometrical Identities Boards Questions
Trigonometrical Identities Boards Questions
Q1
Without using trigonometrical tables, evaluate:
cosec2 57°— tan2 33° + cos 44° cosec 46°— √2cos 45° —tan2 60°
solutions
cosec2 57°— tan2 33° + cos 44° cosec 46°— √2cos 45° —tan2 60°
solutions
Q2
Prove that
solutions
cos A
/
1+sin A
+ tan A = secA.
solutions
Q3
Evaluate without using trigonometric tables,
sin2 28° + sin262° + tan238°-cot2 52° + 1/4 sec2 30°
solutions
sin2 28° + sin262° + tan238°-cot2 52° + 1/4 sec2 30°
solutions
Q4
Prove that
solutions
sinθ - 2 sin3θ
/
2cos3θ - cosθ
= tan θ
solutions
Q4
Prove that √sec2θ + cosec2θ= tan θ + cot θ
solutions
solutions
Q6
Prove that (1+cotθ- cosecθ)(1+ tanθ + secθ)=2
solutions
solutions
Q7
Prove that:
(cosecθ - sinθ)(secθ- cosθ)(tan θ+ cotθ) =1
solutions
(cosecθ - sinθ)(secθ- cosθ)(tan θ+ cotθ) =1
solutions
Q8
Prove that:
solutions
sinA
/
1+cot A
-
cosA
/
1+tan A
= sinA -cosA
solutions
Q9
Prove the identity
(
solutions
(
1-tan θ
/
1-cotθ
)2=tan2 θ
solutions
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