NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Chemistry Coaching Programs
📹 Video Course 2024 (8 Lectures [4 Hrs : 33 Mins]): Offline Support
Click Here to View & Get Complete Material
Rs. 100.00
1 Month Validity (Multiple Devices)
⏳ 🎯 Online Tests (5 Tests [50 Questions Each]): NTA Pattern, Analytics & Explanations
Click Here to View & Get Complete Material
Rs. 500.00
3 Year Validity (Multiple Devices)
🎓 Study Material (159 Notes): 2024-2025 Syllabus
Click Here to View & Get Complete Material
Rs. 350.00
3 Year Validity (Multiple Devices)
🎯 3111 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)
Click Here to View & Get Complete Material
Rs. 650.00
3 Year Validity (Multiple Devices)
NCERT Class 11- Math՚s: Exemplar Chapter 3 Trigonometric Functions Part 11
Question 10:
If
Answer:
Given,
As we have to prove:
if we find out the expression of sin and tan in terms of and , we can get the desired expression to be proved.
Adding equation 1 and 2 to get the value of .
Similarly, on subtracting equation 2 from 1, we get-
Multiplying equation 3 and
Hence,
Question 11:
If then prove that
Answer:
To prove:
We know that:
Hence,
Question 12:
If then prove that
Answer:
To Prove:
Given,
t:
Hence,
Question 13:
If then show that [Hint: Use componendo and Dividendo]
Answer:
To prove:
Given,
Applying componendo – dividendo rule, we get-