Let Us Show That–(i)cosec²48°-tan²42°=1 (ii)sec70°sin20°+cos20°cosec70°=2 - ConceptEra

<iframe src="https://www.googletagmanager.com/ns.html?id=GTM-5L2RTLHB" height="0" width="0" style="display:none;visibility:hidden"></iframe>

Question

Let us show that–(i)cosec²48°-tan²42°=1 (ii)sec70°sin20°+cos20°cosec70°=2

Solution

Share this solution

Related Question

Q- If sin 17°= x/y, let us show that–sec17°-sin73°=x²/y√y²-x²

Chapter: Ratios of Complementary Angles

View Answer

Q- If two angles α and β are complementary angles, let us show that–(i)sin²α+sin²β=1 (ii)cotβ+cosβ=(cosβ/cosα)(1+sinβ) (iii)(secα/cosα)-cot²β=1

Chapter: Ratios of Complementary Angles

View Answer

Q- Let us show that–(i)sin66°-cos24°=0 (ii)cos²57°+cos²33°=1 (iii)cos²75°-sin²15°

Chapter: Ratios of Complementary Angles

View Answer

ConceptEra: The Learning App for WBBSE Students

Attend classes, ask doubts, give mock tests, and much more from the comfort of your home

Download The App

[email protected]

+91 70442 89520

The Learning Platform For WBBSE Students

Quick Links

News Letter

Subscribe to our newsletter to get important news and updates

© Copyright 2022 ConceptEra | All Right Reserved