Math, asked by dagarnishchal, 10 months ago

please help
please tell both questions
class 11 maths chapter 3 Trigonometry
don't spam please

Attachments:

Answers

Answered by baburao99080

0

Answer:

3) 1/2

Step-by-step explanation:

=Cos 80° cos 20°+ sin 80° sin 20°

We have already know

cos A cos B + sin A sin B =cos(A-B)

=cos (80-20)

=cos (60)

=1/2.

Answered by sng1964

2

Answer:

hi good morning please inbox karo muje plz I'm waiting to u ❤️❤️❤️❤️

Previous Question

Next Question

Similar questions

Math, 5 months ago

1. Find the mean of the following. (ii) 3. 7. 6, 9, 11, 12...

Science, 5 months ago

As we know that the leaves of plants are waterproof due to cuticle. On the same way, take some pieces of paper of leaf size and make them waterproof. After completion, put half of these paper pieces in cold water and half in hot water. Do all the pieces of paper remains waterproof? Explain your observations and results with ...

Hindi, 5 months ago

निबंध लेखन :-मेरे विद्यालय का वार्षिकोत्सव प्रस्तावना आयोजन का स्वरूप वार्षिकोत्सव का मुख्य आकर्षण उपसंहार...

English, 10 months ago

Suddenly life moves fast for you. One morning when you wake up, you find yourself old. Draw a picture of you as old. What would you look like? What thoughts and feelings would come to your mind? Describe all in the form of a paragraph. please help me send me a drawing picture I will mark as brainliest...

Math, 10 months ago

find the side of a square whose area is 57.76 sq m...

Math, 1 year ago

Find an equivalent fraction of 75/90 with denominator 60...

Political Science, 1 year ago

what do you understand by democracy define any three features of democracy ...

Math, 1 year ago

Find an equivalent fractions of 75/90 with denominator 60...