true

Take Tuition from the Best Tutors

Affordable fees
1-1 or Group class
Flexible Timings
Verified Tutors

Search in

Trigonometric ratios for complementary angles

Palak K.

05/07/2019 0 0

When the sum of two angles=90 degrees, they are called complementary angles.

We can use following formula →sin(90-θ)=cosθ,cos(90-θ)=sinθ,tan(90-θ)=cotθ,cosec(90-θ)=secθ,sec(90-θ)=cosecθ

We can apply this to evaluate the following example :-

[cosec^2(90-θ)-tan^2θ]/4(cos248+cos²42)

=(sec^2θ-tan^2θ)/4[cos^2(90-42)+cos^2(42)]=1/4(sin^2(42)+cos^2(42))=1/(4x1)=1/4

0 Like 0 Dislike

Follow 2

Other Lessons for You

Mechanical Engineering Subjects Introduction

In the world of mechanical design, a “product” is a real artefact with an exact physical shape and an engineering application. It therefore falls into that category of technical systems that...

Cad Solutions

0 0

Chemical Bonding Part III

Q1. What is hybridization? Explain sp, sp2, sp3 hybridisation with one example each. Q2. What is Lattice energy? How is it calculated indirectly using Born Haber cycle of NaCl Crystal? Q3. What is VSEPR...

Santanu K.

0 0

Quadratic Equation Completing Square

Find the x-intercepts of y = 4x2 – 2x – 5. First off, remember that finding the x-intercepts means setting y equal to zero and solving for the x-values, so this question is really asking...

Kiran Kumar HJ

0 0

maths for 1st class students

Add the following numbers and find the answer to the following questions: 1+2+2+3+5= 5+4+6+9+6= 3+6+3+6= 4+3+6+9= 5+6+3+9+6= 4+3+3+2+1= 3+6+9+7+8= 3+6+9+5+6+4= 1+2+3+5+6+9= 5+6+9+6+3+4= 3+2+4+6= 2+3+2+3= 1+2+3+5+6= 3+2+1+3+6= 4+2+3+...

Chandra Shekhar Joshi

0 0

Difference Between Drawings Against Profit And Drawings Against Capital

Drawings against profit is a part of expected profit whereas drawings against capital is a part of capital. Drawings against profit is debited to Profit and loss account where as drawings against capital...

Chhaya

0 0

Find Tuition near you

Looking for Tuition ?

Learn from Best Tutors on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you

Tuition Questions

What do you mean by locus of the point?

15 Answers

Which property of liquid is responsible for spherical shape of drop?

6 Answers

How can i am speak good English

5 Answers

Two numbers are respectively 20% and 50% more than a third number. What is the ratio of the two numbers?

6 Answers

What are some mind-blowing facts about the English language?

9 Answers

Looking for Tuition Classes?

The best tutors for Tuition Classes are on UrbanPro

Select the best Tutor
Book & Attend a Free Demo
Pay and start Learning

Take Tuition with the Best Tutors

The best Tutors for Tuition Classes are on UrbanPro

I am a Student I am a Tutor
Name*	Please enter your full name. Please enter institute name.
Email*	Please enter your email address.
Phone*	Please enter a valid phone number.
Location*	Please enter a pincode or area name.
City*	Please enter city name.
Category*	Please enter category.
Gender*	Male Female Please select your gender.
Email ID/ Mobile No.*	Please enter either mobile no. or email.
Enter Password*	Please enter OTP Please enter Password Sorry, this phone number is not verified, Please login with your email Id.