Prove that sin A - 2 sin^3 A / 2cos^3 A - cos A = tan A

🚀 Download 21 Must‑Solve Questions for Class 10 Boards! 🚀

Skip to content

Home
Our Profile
Quiz
Class 9th
- Maths Important Questions
  - NCERT Important Questions
Class 10th
- Maths
- Science
Class 12th
- Maths
  - Maths Important Questions
  - Maths Case Studies
Little Champs
Contact us
Search for:
Search

Leave a Comment / trigonometry / By Sapling Academy

Q) Prove that $Prove that: (sin A – 2$

Ans:

Let’s start from LHS

LHS = $Prove that: (sin A – 2$

= $Prove that: (sin A – 2$

= $Prove that: (sin A – 2$

We know that sin²A + cos²A = 1

$Prove that: (sin A – 2$ LHS = $Prove that: (sin A – 2$

= $Prove that: (sin A – 2$

=tan A …….. RHS

Hence proved!

📚 Get Free Worksheet & Share Solution

To download the practice worksheet for this specific topic:

💬 Ask for Worksheet

To help your classmates with this helpful math solution:

Share with Friends

Related Math Questions

Prove that (sin A + cos A)/(sin A – cos A) + (sin A – cos A)/(sin A + cos A) = 2/(2 sin2 A – 1) View Detailed Solution »
Prove that: (1 + cot² θ) (1 – cos θ) (1 + cos θ) = 1 View Detailed Solution »
Evaluate 2sec^2 θ + 3 cosec^2 θ – 2 sin θ cos θ if θ = 45. View Detailed Solution »
If 𝑠𝑖𝑛 (𝐴 + 𝐵) = 1 and 𝑐𝑜𝑠 (𝐴 − 𝐵) = √3/ 2 ,0° < 𝐴, 𝐵 < 90°, find the measure of angles 𝐴 and 𝐵. View Detailed Solution »

← Previous Post

Leave a Comment Cancel Reply

Your email address will not be published. Required fields are marked *

Type here..

Name*

Email*

Website

Save my name, email, and website in this browser for the next time I comment.

Δ

Recent Questions

21. In the give figure, AB ǁ DE and AC ǁ DF. Show that Δ ABC ~ Δ DEF. If BC = 10cm, EB = CF = 5 cm and AB =7 cm, then find the length DE. Read Solution »
22 a. For acute angles A and B, if sec (2 A - B) = √2 and cosec (A + B) = 2 then find the values of A and B. Read Solution »
22 b. Evaluate: (2 cos 30 - cot ^3 60)/tan 30 Read Solution »
23. Prove that 4 - 2 √5 is an irrational number given that √5 is irrational. Read Solution »
24. A bag contains 25 balls. Some of them are yellow and others are green. One ball is drawn at random. If probability of getting a green ball is 3/5 then find the number of yellow balls. Read Solution »

More Questions

Important Books – Class X – Maths @ upto 60% OFF

NCERT Text Book Class 10 Maths
Check Price »
Mathematics Exemplar Problems 2025-26
Check Price »
Arihant All in One Maths 2025-26
Check Price »
Oswaal CBSE Question Bank (Standard)
Check Price »
Mathematics Class 10 by R.D. Sharma
Check Price »

*As an Amazon Associate, I earn from qualifying purchases.

Contact us

+91-7000-138343
contact@saplingacademy.in

Join us

by WhatsApp
by YouTube
by Facebook
by Instagram

Useful Link

Our Quizzes

Children Knowledge club Poster

Children Knowledge club Poster

Children Knowledge club Poster

Copyright © 2026 Sapling Academy | All Rights Reserved.

Powered by Sapling IT Care

Scroll to Top