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Archana Kumar

· started a discussion

· 1 Months ago

Sol ques in diffrent way? (Question:688062.0)

Can we let sin A and cos B 45°. BecoUse sin 45 = cos 45.

Question:

If in a triangle ABC, Sin A = cos B then the value of Cos C is –

Options:
A)

3/2

B)

0

C)

1

D)

1/2

Solution:

Ans: (b)

Let cos B=Sin (90-B)


Knowledge Expert

· commented

· 1 Months ago

Dear student
Your method is also fine.

Keep learning
Team TR

RAHUL YADAV

· commented

· 1 Months ago

Yet to be approved!
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