Question

11. Find the value of sin20 + cos20 + 1
​

Answer 1

Step-by-step explanation:

Prove that

∣

∣

∣

∣

∣

∣

∣

∣

x−3

x−2

x−1

x−4

x−3

x−2

x−α

x−β

x−γ

∣

∣

∣

∣

∣

∣

∣

∣

=0, where α,β,γ are in AP.

Medium

View solution

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If A+B+C=π then the value of Determinant

∣

∣

∣

∣

∣

∣

∣

∣

sin

2

A

sin

2

B

sin

2

C

cosAsinA

sinBcosB

cosCsinC

cos

2

A

cos

2

B2

C

is equal